#### Find the Column Number of a Spreadsheet

You are given a string representing a column in a spreadsheet program. A typical spreadsheet program names the columns A-Z, then AA-AZ, then BA-BZ and so on. Return an integer representing the string argument's column number.

### Requirements

- Must return an integer

#### Example #1

```
solve("M")
> 13
```

#### Example #2

```
solve("AA")
> 27
```

#### Example #3

```
solve("EW")
> 153
```