Please note, when copying a cell containing a formula and pasting to another cell, the formula cell references will adjust to the cells relative to the new location unless they are fixed with absolute references before copying.
If you wanted to paste everything apart from the formula, ie the result of the formula as a value, you can use Ctrl + v which will paste everything, including the formula, and then use Paste Special to paste the value.
Check it out, if it's what you want I can add soem error handling
EDIT: I've added some error handling