Select the range containing the formulas of which you want to keep the values
Put your cursor against the upper boundary of the selected zone -A cross appears -
Press right button of your mouse and WHILE KEEPING THE BUTTON PRESSED move the selected range to where you need the values. ( It can be the same place you started from but you have to move a littlt).
Release the button and a menu will pop up.
Select " Copy Here as Values Only" - Done
There are also some other interesting items in this menu