Great! In this case, you're trying to perform a conditional sum calculation. Here's what you can do: SUMIF function: You can use the SUMIF function to sum only those values that meet a certain condition. The syntax for this formula is as follows: =SUMIF(range, criteria, [sum_range]) "Range" is the range of cells you want to evaluate. "Criteria" is the condition that must be met in order for a cell to be summed. In this case, it would be ">13.5". "[sum_range]" is the range of cells that you want to sum. SUMIFS function: Another option is to use the SUMIFS function, which allows you to sum based on multiple criteria. The syntax for this formula is as follows: =SUMIFS(sum_range, criteria_range1, criteria1, [criteria_range2, criteria2], ...) "sum_range" is the range of cells you want to sum. "criteria_range1" is the first range of cells that you want to evaluate for the first criteria. "criteria1" is the first condition that must be met in order for a cell to be summed. "criteria_range2" is the second range of cells that you want to evaluate for the second criteria. "criteria2" is the second condition that must be met in order for a cell to be summed. In this case, the "criteria_range1" would be the range of cells containing the product prices, and the "criteria1" would be ">13.5". In both cases, make sure to adjust the ranges and criteria to fit your specific data. Let me know if that helps, or if you have any other questions!