Simple Math Operations
Write a function simpleMath that takes two numbers and an operator (as a string) and returns the result of the operation.
Example 1
Input: simpleMath(5, 3, "+");
Output: 8
Example 2
Input: simpleMath(5, 3, "-");
Output: 2
Example 3
Input: simpleMath(5, 3, "*");
Output: 15
Example 4
Input: simpleMath(5, 3, "/"); Output: 1.666
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