In Excel complex formulas can include several operations. Use complex formulas in Excel to calculate more extensive data.
Sometimes you will write a formula that gets used a lot in different places of a worksheet. For example, a spreadsheet may contain several columns of numbers. Each column will contain a formula that adds all of the numbers in it. You could write the formula several times, once in each column. Or you could copy and paste it into each column. The fill formula method allows you to copy a formula and then fill it into many different consecutive cells at the same time.
The mouse pointer changes to a black crosshair when passed over the fill handle, or the square box in the lower right corner of the cell.
The cell references in a formula are automatically updated when the formula is copied to other cells in the spreadsheet.
You can also use copy and paste to copy a formula to other cells. Click next to learn more about the copy and paste method.