diff --git a/08_calculator/calculator.js b/08_calculator/calculator.js
index f4e776f..4147969 100644
--- a/08_calculator/calculator.js
+++ b/08_calculator/calculator.js
@@ -46,12 +46,21 @@ const factorial = function(num) {
return sum;
};
-// Do not edit below this line
-module.exports = {
- add,
- subtract,
- sum,
- multiply,
- power,
- factorial
-};
+const operate = function(op, num1, num2) {
+ switch (op) {
+ case 'add':
+ return add(num1, num2);
+ case 'subtract':
+ return subtract(num1, num2);
+ case 'multiply':
+ return multiply(num1, num2);
+ case 'power':
+ return power(num1, num2);
+ case 'factorial':
+ return factorial(num1);
+ }
+}
+
+let answer = operate("multiply", 1, 2);
+
+console.log(answer);
\ No newline at end of file
diff --git a/08_calculator/index.html b/08_calculator/index.html
new file mode 100644
index 0000000..5253aa5
--- /dev/null
+++ b/08_calculator/index.html
@@ -0,0 +1,40 @@
+
+
+
+
+
+
+ Document
+
+
+
+
+
+
+
+
1000
+
C
+
a ^
+
n!
+
/
+
7
+
8
+
9
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+
4
+
5
+
6
+
-
+
1
+
2
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3
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+
+
.
+
0
+
<
+
+