I want to SUM the values of column A from 7 to 7 strating with cell A4
Ex: A4+A11+A18+.........A74
How do I modify SUM(A4:A74) to calculate the sum from exemple ??
I want to SUM the values of column A from 7 to 7 strating with cell A4
Ex: A4+A11+A18+.........A74
How do I modify SUM(A4:A74) to calculate the sum from exemple ??
Try:
=SUMPRODUCT(--(MOD(ROW(A4:A74)-ROW(A4),7)=0),A4:A74)
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