Explanation:
To add 9.37 and 21.6, you can follow these steps:
1. Align the numbers vertically, making sure the decimal points are lined up.
```
9.37
+ 21.6
```
2. Starting from the rightmost column, add the digits in each column, carrying over any excess to the next column if necessary.
```
9.37
+ 21.6
------
30.97
```
3. Write the sum, 30.97, as the final result.
Therefore, the sum of 9.37 and 21.6 is 30.97.