trying to use this formula:
SUMPRODUCT(($L$22:$L$1166={"1svc"})*($M$22:$M$1166))
Column L contains both text and numerical data. Using excel help, near as I can tell it cannot read the column with both types being contained within.
here is as far as I can get with "help":
Microsoft Excel cannot translate the text into the correct data type. Make sure the formula or function is correct for the required operand or argument, and that the cells that are referenced by the formula contain valid values. For example, if cell A5 contains a number and cell A6 contains the text "Not available", the formula =A5+A6 will return the error #VALUE!.
???
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