Some basic arithmetic operators are +, -, *, /, and %. In this challenge you will be given three parameters, num1, num2, and an operator. Use the operator on number 1 and 2.
operate(1, 2, "+") ➞ 3
# 1 + 2 = 3
operate(7, 10, "-") ➞ -3
# 7 - 10 = -3
operate(20, 10, "%") ➞ 0
# 20 % 10 = 0
There will not be any divisions by zero.