I want to sum up all the value such as "aa" instead of softing and using
function sum/if. But it doesn't work. Any expect can help? Thanks.

1 aa 10
2 bb 40
3 aa 20
4 cc 25
5 aa 10
6 bb 44

=SUM(IF(B1:B6="aa",C1:C6),0)


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moni88
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