I have two cells container year and week number. They in format yyyyww.
Examples

cell 1 200712 --- week 12 in 2007
cell 2 200813 --- week 13 in 2008

What formula do I need to use to calculate the week differences between both
cells so i can get the week difference between them is 53 weeks or 12,25
months

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Sincerely Yours
Haviv