A macro that enters "xx" next to a cell that is a non-zero value

[Andrewstupendo]

Hello All,
I would like some VBA language that will enter "xx" if the value in the adjoining cell is a non-zero number.
As you can see in the result tab, if the "number" cell is zero then the "amount" cell remains zero.
If the "number" cell is not zero, then the adjoining amount cell is replaced with "xx".
If you have any VBA language that would be of assistance, I would be most appreciative.

Best,
Andrewstupendo