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¦^´_ 1# lifedream

=SUMPRODUCT(((LEFT(A$2:A$12,3)="A10")+(LEFT(A$2:A$12,3)="A11"))*B$2:B$12)

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¦^´_ 3# softsadwind

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E1=SUMPRODUCT(((LEFT($A$2:$A$12,3)=D1)*$B$2:$B$12))

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