How do you paste what you've copied into a cell?

To paste what you've copied into a cell, first select the cell where you want to paste the content. Then, right-click on the selected cell and choose "Paste" from the context menu, or you can use the keyboard shortcut Ctrl + V (Cmd + V on Mac). The copied content will then appear in the cell you selected. If you're using spreadsheet software, you can also use the "Edit" menu at the top to find the paste option.