I have a SUM function for a line in my spreadsheet that is just supposed to add up the values in the row. I have 15 or so rows with the same function (just different row numbers for the row I want to add). But now whenever I try to insert the SUM function it keeps giving me a date instead of the sum of the numbers. The weirdest part is that if I go down to the next row below, the functions seem to work fine. I have tried deleting and reinserting the rows and that doesn't help.