I'm returning this beauty TODAY!

This calculator has buttons that fail to respond more often than not. When doing calculations for an exam in class yesterday I spent more time correcting my calculator than I did doing stats problems! By no means am I speedy at numerical input, but this thing is slower than me. If you press in a series of numbers at a reasonable pace I would advise that you keep a close eye on the screen, because it will simply skip a number that comes on the heels of another before moving right along...Thus 12.67 becomes 1.67, 1267 or even 127. In addition, the sub-menus and navigation aren't very user friendly and the general information sheet wasn't much help. Those are minor flaws, however, compared to having a calculator that doesn't (calculate, that is).