diff --git a/lesson_06/expression/src/expression_calculator.ts b/lesson_06/expression/src/expression_calculator.ts
index 13cb2ca05..522b07e69 100644
--- a/lesson_06/expression/src/expression_calculator.ts
+++ b/lesson_06/expression/src/expression_calculator.ts
@@ -1,11 +1,29 @@
 export class ExpressionCalculator {
   /** Returns the calculation of ((a + b) * c) / d^e */
   calculate(a: number, b: number, c: number, d: number, e: number): number {
-    // Implement your code here to return the correct value.
-    return 0;
+    const P = this.add(a, b);
+    const E = this.pow(d, e);
+    const M = this.multiply(P, c);
+    const D = this.divide(M, E);
+    return D;
+    //const expression = this.mult(this.add(a, b), c) / this.pow(d, e);
+    //return expression;
   }
 
   pow(base: number, exponent: number): number {
-    return Math.pow(base, exponent);
+    const expo = Math.pow(base, exponent);
+    return expo;
+  }
+  add(x: number, y: number): number {
+    const addition = x + y;
+    return addition;
+  }
+  multiply(X: number, Y: number): number {
+    const multiply = X * Y;
+    return multiply;
+  }
+  divide(x: number, y: number): number {
+    const divide = x / y;
+    return divide;
   }
 }