1. To enter a number into a cell, just select the cell you want to enter the number into by clicking on it. A black border will surround the cell you selected. See the diagram above.
2. Next, just type the number you want to enter into the cell. Excel also displays the number you typed in the formula bar.
3. When you are done press the ‘Enter’ key on your computer keyboard
Excel inserts the number you had typed into the cell.
Lesson 6: How to Enter a Date or Time into a Cell