I need a macro code to divide select numbers on a worksheet by 640 and then go back and multiply them by 640. I need it to be with a button somehow that gives me the option to click it to do one and click the other option (or unclick) the button to multiply the numbers (which will be referenced in the code) to 640, reverting it back to what it originally was. Please guys, this would be absolutely phenomenal if anyone could at least help steer me in the right direction!