MS Excel
To create a formula, you first:

Type the equals sign (=) to tell Excel that you’re about to enter a formula
Enter the formula using any input values and the appropriate mathematical operators that make up your formula
Select the cell you want to place the formula into
Choose the new command from the file menu

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MS Excel
Right clicking something in Excel:

Deletes the object
Selects the object
Nothing the right mouse button is there for left handed people
Opens a shortcut menu listing everything you can do to the object

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