Sumproducts is best known for multiplying items together and then summing them. Hence the name. Sumproducts, product is a fancy way of saying multiply. But what a lot of people don't know is that it isn't restricted to just multiplying. Instead of multiplying and then summing. Sumproducts can replace the commas or sometimes semicolons, with other arithmetic operators, such as divide, plus and minus.

It will do that series of operations, e.g., a series of divisions, and then some the results as normal.