...type the following formula into a cell:
```
=SUBSTITUTE(A2,"A","1")
```
This formula will replace all occurrences of the letter "A" in cell A2 with the number "1".
## 5 Hashtags in the form of #
* #ExCeltutorial
* #DataAnalysis
* #FinancialCalculations
* #spreadsheet
* #NumberFormatting