Have you tried Calc? It's loosely modelled after the HP-calculators and it's my first choice of calculator when I have a full blown computer at my hands. http

Have you tried Calc? It's loosely modelled after the HP-calculators and it's my first choice of calculator when I have a full blown computer at my hands. https://www.gnu.org/software/emacs/manual/html_mono/calc.html#What-is-Calc https://www.gnu.org/software/emacs/manual/html_mono/calc.htm...