diff --git a/src/main/java/com/thealgorithms/maths/MathBuilder.java b/src/main/java/com/thealgorithms/maths/MathBuilder.java
index 3534749dd41c..1cf3d8b7fc9a 100644
--- a/src/main/java/com/thealgorithms/maths/MathBuilder.java
+++ b/src/main/java/com/thealgorithms/maths/MathBuilder.java
@@ -26,7 +26,7 @@ public double get() {
     public long toLong() {
         try {
             if (Double.isNaN(result)) {
-                throw new IllegalArgumentException("Cannot convert NaN to long");
+                throw new IllegalArgumentException("Cannot convert NaN to long!");
             }
             if (result == Double.POSITIVE_INFINITY) {
                 return Long.MAX_VALUE;
@@ -48,6 +48,8 @@ public long toLong() {
 
     public static class Builder {
         private double number;
+        private double sideNumber;
+        private boolean inParenthesis;
         private double memory = 0;
 
         public Builder() {
@@ -59,26 +61,44 @@ public Builder(double num) {
         }
 
         public Builder add(double num) {
-            number += num;
+            if (inParenthesis) {
+                sideNumber += num;
+            } else {
+                number += num;
+            }
             return this;
         }
 
         // Takes a number and a condition, only does the operation if condition is true.
         public Builder addIf(double num, BiFunction<Double, Double, Boolean> condition) {
-            if (condition.apply(number, num)) {
+            if (!condition.apply(number, num)) {
+                return this;
+            }
+            if (inParenthesis) {
+                sideNumber += num;
+            } else {
                 number += num;
             }
             return this;
         }
 
         public Builder minus(double num) {
-            number -= num;
+            if (inParenthesis) {
+                sideNumber -= num;
+            } else {
+                number -= num;
+            }
             return this;
         }
 
         // Takes a number and a condition, only does the operation if condition is true.
         public Builder minusIf(double num, BiFunction<Double, Double, Boolean> condition) {
-            if (condition.apply(number, num)) {
+            if (!condition.apply(number, num)) {
+                return this;
+            }
+            if (inParenthesis) {
+                sideNumber -= num;
+            } else {
                 number -= num;
             }
             return this;
@@ -113,7 +133,6 @@ public Builder e() {
         }
 
         public Builder randomInRange(double min, double max) {
-
             if (number != 0) {
                 throw new RuntimeException("Number must be zero for random assignment!");
             }
@@ -123,28 +142,49 @@ public Builder randomInRange(double min, double max) {
         }
 
         public Builder toDegrees() {
-            number = Math.toDegrees(number);
+            if (inParenthesis) {
+                sideNumber = Math.toDegrees(sideNumber);
+            } else {
+                number = Math.toDegrees(number);
+            }
             return this;
         }
 
         public Builder max(double num) {
-            number = Math.max(number, num);
+            if (inParenthesis) {
+                sideNumber = Math.max(sideNumber, num);
+            } else {
+                number = Math.max(number, num);
+            }
             return this;
         }
 
         public Builder min(double num) {
-            number = Math.min(number, num);
+            if (inParenthesis) {
+                sideNumber = Math.min(sideNumber, num);
+            } else {
+                number = Math.min(number, num);
+            }
             return this;
         }
 
         public Builder multiply(double num) {
-            number *= num;
+            if (inParenthesis) {
+                sideNumber *= num;
+            } else {
+                number *= num;
+            }
             return this;
         }
 
         // Takes a number and a condition, only does the operation if condition is true.
         public Builder multiplyIf(double num, BiFunction<Double, Double, Boolean> condition) {
-            if (condition.apply(number, num)) {
+            if (!condition.apply(number, num)) {
+                return this;
+            }
+            if (inParenthesis) {
+                sideNumber *= num;
+            } else {
                 number *= num;
             }
             return this;
@@ -154,7 +194,11 @@ public Builder divide(double num) {
             if (num == 0) {
                 return this;
             }
-            number /= num;
+            if (inParenthesis) {
+                sideNumber /= num;
+            } else {
+                number /= num;
+            }
             return this;
         }
 
@@ -163,107 +207,189 @@ public Builder divideIf(double num, BiFunction<Double, Double, Boolean> conditio
             if (num == 0) {
                 return this;
             }
-            if (condition.apply(number, num)) {
+            if (!condition.apply(number, num)) {
+                return this;
+            }
+            if (inParenthesis) {
+                sideNumber /= num;
+            } else {
                 number /= num;
             }
             return this;
         }
 
         public Builder mod(double num) {
-            number %= num;
+            if (inParenthesis) {
+                sideNumber %= num;
+            } else {
+                number %= num;
+            }
             return this;
         }
 
         // Takes a number and a condition, only does the operation if condition is true.
         public Builder modIf(double num, BiFunction<Double, Double, Boolean> condition) {
-            if (condition.apply(number, num)) {
+            if (!condition.apply(number, num)) {
+                return this;
+            }
+            if (inParenthesis) {
+                sideNumber %= num;
+            } else {
                 number %= num;
             }
             return this;
         }
 
         public Builder pow(double num) {
-            number = Math.pow(number, num);
+            if (inParenthesis) {
+                sideNumber = Math.pow(sideNumber, num);
+            } else {
+                number = Math.pow(number, num);
+            }
             return this;
         }
 
         public Builder sqrt() {
-            number = Math.sqrt(number);
+            if (inParenthesis) {
+                sideNumber = Math.sqrt(sideNumber);
+            } else {
+                number = Math.sqrt(number);
+            }
             return this;
         }
 
         public Builder round() {
-            number = Math.round(number);
+            if (inParenthesis) {
+                sideNumber = Math.round(sideNumber);
+            } else {
+                number = Math.round(number);
+            }
             return this;
         }
 
         public Builder floor() {
-            number = Math.floor(number);
+            if (inParenthesis) {
+                sideNumber = Math.floor(sideNumber);
+            } else {
+                number = Math.floor(number);
+            }
             return this;
         }
 
         public Builder ceil() {
-            number = Math.ceil(number);
+            if (inParenthesis) {
+                sideNumber = Math.ceil(sideNumber);
+            } else {
+                number = Math.ceil(number);
+            }
             return this;
         }
 
         public Builder abs() {
-            number = Math.abs(number);
+            if (inParenthesis) {
+                sideNumber = Math.abs(sideNumber);
+            } else {
+                number = Math.abs(number);
+            }
             return this;
         }
 
         public Builder cbrt() {
-            number = Math.cbrt(number);
+            if (inParenthesis) {
+                sideNumber = Math.cbrt(sideNumber);
+            } else {
+                number = Math.cbrt(number);
+            }
             return this;
         }
 
         public Builder log() {
-            number = Math.log(number);
+            if (inParenthesis) {
+                sideNumber = Math.log(sideNumber);
+            } else {
+                number = Math.log(number);
+            }
             return this;
         }
 
         public Builder log10() {
-            number = Math.log10(number);
+            if (inParenthesis) {
+                sideNumber = Math.log10(sideNumber);
+            } else {
+                number = Math.log10(number);
+            }
             return this;
         }
 
         public Builder sin() {
-            number = Math.sin(number);
+            if (inParenthesis) {
+                sideNumber = Math.sin(sideNumber);
+            } else {
+                number = Math.sin(number);
+            }
             return this;
         }
 
         public Builder cos() {
-            number = Math.cos(number);
+            if (inParenthesis) {
+                sideNumber = Math.cos(sideNumber);
+            } else {
+                number = Math.cos(number);
+            }
             return this;
         }
 
         public Builder tan() {
-            number = Math.tan(number);
+            if (inParenthesis) {
+                sideNumber = Math.tan(sideNumber);
+            } else {
+                number = Math.tan(number);
+            }
             return this;
         }
 
         public Builder sinh() {
-            number = Math.sinh(number);
+            if (inParenthesis) {
+                sideNumber = Math.sinh(sideNumber);
+            } else {
+                number = Math.sinh(number);
+            }
             return this;
         }
 
         public Builder cosh() {
-            number = Math.cosh(number);
+            if (inParenthesis) {
+                sideNumber = Math.cosh(sideNumber);
+            } else {
+                number = Math.cosh(number);
+            }
             return this;
         }
 
         public Builder tanh() {
-            number = Math.tanh(number);
+            if (inParenthesis) {
+                sideNumber = Math.tanh(sideNumber);
+            } else {
+                number = Math.tanh(number);
+            }
             return this;
         }
 
         public Builder exp() {
-            number = Math.exp(number);
+            if (inParenthesis) {
+                sideNumber = Math.exp(sideNumber);
+            } else {
+                number = Math.exp(number);
+            }
             return this;
         }
 
         public Builder toRadians() {
-            number = Math.toRadians(number);
+            if (inParenthesis) {
+                sideNumber = Math.toRadians(sideNumber);
+            } else {
+                number = Math.toRadians(number);
+            }
             return this;
         }
 
@@ -279,7 +405,6 @@ public Builder recall(boolean cleanMemory) {
             if (cleanMemory) {
                 memory = 0;
             }
-
             return this;
         }
 
@@ -292,7 +417,6 @@ public Builder recallIf(Function<Double, Boolean> condition, boolean cleanMemory
             if (cleanMemory) {
                 memory = 0;
             }
-
             return this;
         }
 
@@ -322,6 +446,40 @@ public Builder print() {
             return this;
         }
 
+        public Builder openParenthesis(double num) {
+            sideNumber = num;
+            inParenthesis = true;
+            return this;
+        }
+
+        public Builder closeParenthesisAndPlus() {
+            number += sideNumber;
+            inParenthesis = false;
+            sideNumber = 0;
+            return this;
+        }
+
+        public Builder closeParenthesisAndMinus() {
+            number -= sideNumber;
+            inParenthesis = false;
+            sideNumber = 0;
+            return this;
+        }
+
+        public Builder closeParenthesisAndMultiply() {
+            number *= sideNumber;
+            inParenthesis = false;
+            sideNumber = 0;
+            return this;
+        }
+
+        public Builder closeParenthesisAndDivide() {
+            number /= sideNumber;
+            inParenthesis = false;
+            sideNumber = 0;
+            return this;
+        }
+
         public Builder format(String format) {
             DecimalFormat formater = new DecimalFormat(format);
             String num = formater.format(number);
diff --git a/src/test/java/com/thealgorithms/maths/MathBuilderTest.java b/src/test/java/com/thealgorithms/maths/MathBuilderTest.java
index b6ecc6746701..dc381bfca5d3 100644
--- a/src/test/java/com/thealgorithms/maths/MathBuilderTest.java
+++ b/src/test/java/com/thealgorithms/maths/MathBuilderTest.java
@@ -35,4 +35,18 @@ void batchSalaryProcessing() {
         long[] expectedSalaries = {1840, 3036, 4048, 5060};
         assertArrayEquals(expectedSalaries, processedSalaries);
     }
+
+    @Test
+    void parenthesis() {
+        // 10 + (20*5) - 40 + (100 / 10) = 80
+        double result = new MathBuilder.Builder(10).openParenthesis(20).multiply(5).closeParenthesisAndPlus().minus(40).openParenthesis(100).divide(10).closeParenthesisAndPlus().build().get();
+        assertEquals(80, result);
+    }
+
+    @Test
+    void areaOfCircle() {
+        // Radius is 4
+        double area = new MathBuilder.Builder().pi().openParenthesis(4).multiply(4).closeParenthesisAndMultiply().build().get();
+        assertEquals(Math.PI * 4 * 4, area);
+    }
 }