A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
ref my earlier question I found an answer that worked:
Why does my formula not calculate in Excel?
Instead the text of the formula itself appears in the cell directly. See example below. Cause: The cell is formatted as Text, which causes Excel to ignore any formulas. This could be directly due to the Text format, or is particularly common when importing data from a CSV or Notepad file
I copied the data from the original import worksheet into a fresh worksheet and the formulas worked fine