Replace the week with the following to get a number that increments each
week

INT((NOW()/7)-5599)


Donnas wrote:

This may be really stupid questions but here it goes...
Below is my formula, I am adding some columns then dividing by 3. Next
week I will need the same columns added but will need to divide by 4, the
follwing week by 5. Is there any way Excel will do this without me manually
changing the number each week?

=SUM(M13:M16)/3