Dear Are,
1) =(102/110)+(75/82) < 0.93
2) Check out some uses of the SUMPRODUCT function [in this Discussion Group].
Micky


"Are" wrote:

Dear All,

Please help me how to sum aaray and devide them with not null value?
ex :
D E
2 110 0
3 110 102
4 80 0
5 66 0
6 82 75
7 70 0

result = 0.93 ( =(E3/D3)+(E6/D6))

Thanks in advance