Need RPN?

This is the ticket. I sometimes think RPN is particular to lefties. No learning curve unless you are right minded (pun intended). I started with an HP41C back in the eighties. OK, I will admit it - the logic used in the operation of "normal" calculators drives me crazy. Thank you HP for providing the 12C for the iPad.
Lots of Fish

Lots of Fish about HP 12C Financial Calculator