Try typing "2+3*4" into your calculator. The correct answer is "14", but the elCheapo calculators (the "$5 ones" in my previous response) will give an answer of "20".
Mine gave the answer 14

this is my calculator btw:

or click
here for a really blury, badly shot picture of the actual thing, edited for clarity, merged together and shot with a webcam i got free when i ordered my PSU

what do you get if you go [(-)] [2] [x] [x] [=] ?
If you mean [x] as in the multiply button, i get a syn error