我如何根据某个数字在Excel中计算每周平均值

Question

I have a figure which is 2880 in cell A1 lets say it's a monthly salary and in this example there are 31 days in the month.

What I want to work out is what would be the weekly average of this figure. Considering it is just over 4 whole weeks - I can't divide by 4 as that's not accurate but then I can't divide by 5 either for the same reason.

So what I need is a calculation which can give me an exact weekly average - is this it all possible or am I trying to complicate matters?

Thanks Dan

Answer 1

You can use the following formula where cell C2 is the number of the month (March would be 3):

=ROUND(C3/(DATE(1,C2+1,1)-DATE(1,C2,1))*7,2)

See screenshot of the example: