A simple calculator accepts the following types of strings as input:
num+num
num−num
num∗num
num/num
where num is a positive integer between 1 and 10000 inclusive.
Find the value produced by the given expression. Here +, -, *, and / denote addition, subtraction, multiplication and division respectively. All operations are performed on integers, so "5/3" is 1.
One string that a simple calculator accepts.
Print the result of the given expression.