A real maths prodigy. Did you take it any further? I'm curious. Did you find out which Casio VPAM you have? Is it one of the older ones? In order to resolve this confusion I propose some changes to the usual PEDMAS (BIDMAS, BODMAS etc) acronym. P Parentheses (brackets) E Exponents (powers) E Expansion (multiplication next to things) D Division OM Overt Multiplication (i.e. using the x sign) A Addition S Subtraction S Shift (bitwise shift is used when dealing in binary) TBH, I'm not sure mathematicians will adopt my new system, but there's bound to be interest from the Catholic church.