Issue with Formula not Copying Down in Excel 2010

When you use your mouse to copy from above cell, but the amount remains the same as the one we copy from, it means that you have selected "Manual" in Calculation Options. See picture below:

After you select "Automatic" in Calculation Options, the amount will change based on your formula.

Manual calculation mode means that Excel will only recalculate all open workbooks when you request it by pressing F9 or Ctrl-Alt-F9, or when you Save a workbook.
For workbooks taking more than a fraction of a second to recalculate it is usually better to set Calculation to Manual.

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