How will i enter an excel formula to a row?

To enter a formula in Excel, click on the cell where you want the result to appear. Type the equal sign (=) followed by the formula you want to use, such as =SUM(A1:A10) for summing values in cells A1 to A10. Press Enter, and the formula will calculate and display the result in that cell. To apply the same formula to a row, you can drag the fill handle (a small square at the bottom right corner of the cell) across the desired cells.