Nice to know what the expected answer is but is I still think it should be 1. I read it as 6 / ( 2 * (2 + 1) ) It has been a great discussion though and certainly hi-lighted the differences in basic math education around the world as well as differences in calculator implementations. Cheers Chris --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .