Summing horizontal ranges where the criteria is in a row

Hi

No doubt this is really simple but can't wrap my head around it...

Need to sum up a horizontal range where the criteria is in the first column of the row and the criteria is variable.

Any assistance would be amazing

Thanks
NJ

=SUMPRODUCT(($B$2:$I$7)*($A$2:$A$7=O5))

O5 is your selected date

Thank you so so much

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