PROGRAMMING:Crazy formula

####Task description
```
Crazy primary school students in crazy dragon met a crazy teacher, crazy teacher for him out of a crazy paper, the paper is full of crazy arithmetic problems, such as: 1 23 + 4 56 =.
The numbers and symbols in the title are mixed with some spaces. Can you work out the crazy answer?
very
many
year
with
After that,
Yu Fanlong changed his name to Yu Long and was admitted to Harbin Normal University!
```
####Input format:
```
Include an expression in one line. There are some spaces in the middle of the formula, the operator is guaranteed to be one of "+, -, *, /", and all the operands are non negative integers. The division result is consistent with the integer division rule of C language, and the divisor is not zero in all test data.
```
####Output format:
Output normal formula and result.
####Input sample 1
```in
1 2 3 + 45 6 =
```
####Output sample 1
```out
123+456=579
```
####Input sample 2
```in
1 2 3 / 1 2 =
```
####Output sample 2
```out
123/12=10
```







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