Who here is a fast counter? People don't believe it when I tell them that, with a little observation and arithmetic, "manually" parsing isn't too hard. I tested myself against someone I know who has a parser, and I have a deviance of +- 5 dps. I cheat a little by rounding to two sig digits.

Do any of y'all have fun adding and dividing in their head?
My fellow math nerds get in here.