CTRL+Y a mini macro

On your daily work, in Excel, you have had the need to redo actions, simple same action to multiple areas perhaps

Or apply similar format to more than 1 region, or repeat actions, the last action you did

In all these scenarios, use CTRL+Y

It is like a mini-macro to repeat last action taken on new set of selected cells.

Easy, simple but will save you lots of time, try it out