Count if another cell is blank
Hello,
I have a spreadsheet with a running total and would like to count a sum only if there is an invoice number to the right of the cell.
I have attached the worksheet for you to see what I have created.
I also am having trouble grouping each month, I have subtotalled but although the calculations are correct, when I try to reduce the months down to just the total per month, it does not reduce all the dates.
I would appreciate your help. If I am only meant to ask one question per post, the first is priority.
Thanks
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