I want to sum every 7 rows in a worksheet and put the sum in different column & rows

Question

I have never really used Excel before but this seems like it should be possible.

I have an ongoing document where I will be adding values every day, but what I want

Answer 1

In D12, put

=SUM(OFFSET($B$7,(ROW()-12)*8,0,8,1))

and fill down column D as far as you want. Note that B7:B14 is really 8 rows, not 7. If you really want 7 rows (B7:B13), then change the two 8's to 7's in the formula.