For anyone else wondering about that formula. https://exceljet.net/excel-functions/excel-sumproduct-function https://exceljet.net/excel-functions/excel-sumprod

For anyone else wondering about that formula. https://exceljet.net/excel-functions/excel-sumproduct-function https://exceljet.net/excel-functions/excel-sumproduct-functi... All I can say is, I am grateful I don’t have to deal with other people’s spreadsheets. My jam is programming languages and SQL, not obscure formulas and weird constructs made from surprising ways of using them.