diff --git a/08_calculator/calculator.js b/08_calculator/calculator.js
index 28a6476..f405111 100644
--- a/08_calculator/calculator.js
+++ b/08_calculator/calculator.js
@@ -13,8 +13,11 @@ const sum = function(array) {
   return output;
 };
 
-const multiply = function() {
-
+const multiply = function(array) {
+	const output = array.reduce((multiplification, value) => {
+    return multiplification * value;
+  }, 1);
+  return output;
 };
 
 const power = function() {
diff --git a/08_calculator/calculator.spec.js b/08_calculator/calculator.spec.js
index 33e9367..32fe258 100644
--- a/08_calculator/calculator.spec.js
+++ b/08_calculator/calculator.spec.js
@@ -39,11 +39,11 @@ describe('sum', () => {
 });
 
 describe('multiply', () => {
-  test.skip('multiplies two numbers', () => {
+  test('multiplies two numbers', () => {
     expect(calculator.multiply([2, 4])).toBe(8);
   });
 
-  test.skip('multiplies several numbers', () => {
+  test('multiplies several numbers', () => {
     expect(calculator.multiply([2, 4, 6, 8, 10, 12, 14])).toBe(645120);
   });
 });