Command Line Calculator

Do you know that you have a mini-calculator directly... in the command prompt. It is able to calculate expressions too. The trick is to use the SET command with the switch /a. The result is outputted to the console... See some examples:

Command	Result
SET /A 1+1	2
SET /A (10+20)*2	60
SET /A (10+20)*2^4	720
SET /A (10+20)*2^4-(10*(2+3)*(2+9-1))	220
SET /A 0XFF	255
SET /A 0XFF+12	267

Enjoy...
(Tested on Windows XP)