[nocoiner]

This is good advice. Also running a quick function can be quicker than opening up excel, fiddling with a cell, etc. (my excel skills are obviously at-best rudimentary). And it’s a cool moment when RPN finally “clicks” and figure out how to perform sequential operations in it without having to rely on increasingly nested parentheses.

[wombatpm]

RPN is great. Start at the deepest level and work your way up.

I used to load my HP15c with common formula for engineering and a basic polynomial root finder.