diff --git a/lesson_06/expression/.env.test b/lesson_06/expression/.env.test
index 56cf4a06f..1eeddbff6 100644
--- a/lesson_06/expression/.env.test
+++ b/lesson_06/expression/.env.test
@@ -1 +1 @@
-HW_VERSION=your assigned version here
\ No newline at end of file
+HW_VERSION=B
\ No newline at end of file
diff --git a/lesson_06/expression/src/expression_calculator.ts b/lesson_06/expression/src/expression_calculator.ts
index 76b215c42..9b13cc870 100644
--- a/lesson_06/expression/src/expression_calculator.ts
+++ b/lesson_06/expression/src/expression_calculator.ts
@@ -2,10 +2,27 @@ export class ExpressionCalculator {
   /** Returns a calculation involving a, b, c, d, and e */
   calculate(a: number, b: number, c: number, d: number, e: number): number {
     // Implement your code here to return the correct value.
-    return 0;
+    return this.divide(this.pow(this.add(a, b), c), this.multiply(d, e));
   }
 
-  pow(base: number, exponent: number): number {
+add(a: number, b: number): number {
+    return a + b;
+  }
+
+multiply(d: number, e: number): number {
+    return d * e;
+  }  
+
+pow(base: number, exponent: number): number {
     return Math.pow(base, exponent);
   }
+
+divide(a: number, b: number): number {
+    if (b === 0) {
+      throw new Error("Division by zero is not allowed.");
+    }
+    return a / b;
+
+  } 
+
 }