Click or tap the cell where you want the result to appear, then type the equal sign (=) to open the Formula Editor.
Click or tap one or more cells to use in your formula, or enter a value (for example, a number such as 0 or 5.20).
You can also add functions. See Formula Editor or Formula Editor or Functions Browser or on the web. See .
The in the Formula Editor.
If you no longer want to use a formula that’s associated with a cell, you can delete it.
Select the cell that contains the formula, then tap or press the Delete key.
For specific instructions on how to accomplish tasks in Numbers, Pages, or Keynote, see the user guide for that app.