So, I am thinking about calculators more. Whenever it isn't sunny and I don't have an urge to hang around with Rosario, I may put what I think into code, too ;-)
But anyway congrats to Ariya and mpyne since their calculators are already pretty good (haven't tried Zack's yet, I have no ruby).
But I still have some tricks up my sleeve!
You know, your screed reminded me of something: