I'm also an engineer who used the TI-85 nearly 20 years ago so I know how the orders work in that calculator which is not consistent with almost all programming languages and newer generation calculators most of which listen to Auntie BEDMAS.
Here's to old guys!
I've pretty-much done all my fun math with pencil and paper, saving the calculator for larger numbers. Just wrote things the way I did for 20 years. Never dove much into using the computer for these things, outside of a few interesting Excel spreadsheets and some old BASIC calculations. Precious little compared to the pencil and paper stuff though.
BTW, I take it that B=brackets, as opposed tParentheseses.
It's amazing how much fun we seem to have had with a simple math problem with NO variables!