Preferred calculator?

[Ralf Mardorf]

I tend to use

http://extcalc-linux.sourceforge.net/

Unfortunately Extcalc suffers from a bug. Sometimes when a
result should be 0 it isn't 0.

Like Galculator, also Extcalc does recognise the German num pad's ","
as the English ".", if the chosen language is English.

However, I prefer to use other, but Linux calculators, especially since
using a pencil, instead of a keyboard sometimes is way more
comfortable.