Create A Macro Within VBA Module

Hello

I am having a problem creating a macro to perform a calculation within a work sheet.

What I would like to do is have any active cell within the work sheet perform the calculation of: divide by 1.15.
I can perform the calculation using any number as per example divide by 100, 45, or any number that has not a decimal point.

When I using a decimal point with the number I receive a error message from the VBA module.

Thank you.