PROGRAMMING:Average of 3 integers
Enter three integers and average them.
###Input format:
Enter three integers in one line, with one space between them, without any other common characters.
###Output format:
Output in the order of "aver = result" in one line, and the result is to keep 6 decimal places as it is, without other additional formats.
###Input example:
```in
2 5 1
```
###Output example:
```out
aver=2.666667
```
answer：If there is no answer, please comment
###Input format:
Enter three integers in one line, with one space between them, without any other common characters.
###Output format:
Output in the order of "aver = result" in one line, and the result is to keep 6 decimal places as it is, without other additional formats.
###Input example:
```in
2 5 1
```
###Output example:
```out
aver=2.666667
```
answer：If there is no answer, please comment