In the first line of the input data the arithmetic expression is written in the form:
<number> <operation> <number> =
<Number> is a natural number not greater than 10000.
<Operation> - one of the characters +, -, *.
At the beginning of the line, at the end of the line, and between numbers and the operation sign, a number and the = symbol, there can be any number of spaces (or no spaces).
It is guaranteed that the length of the string does not exceed 200 characters.
Display the result of evaluating the expression.
Examples
| # |
Input |
Output |
| 1 |
154 +3 = |
157 |