divide something by the weeks since the excel was made

[Sjoerdvdbosch]

I have an excel sheet made ​​with a macro in it.

This excel calculates how many operations everyone does every week.
I would also calculate how many transactions they average make per week,
does anyone know a formula that divides the total number by the weeks since the excel was made.

Thanks already

[Sjoerdvdbosch]

=A1/DATEDIF(41162;TODAY();"d")/7


thanks guys