Am I the last person to know this? Today we were calculating all sorts of values related to polygons and regular polygons and interior and exterior angles of regular polygons and such. As I'm sending the kiddies off with their homework, I thought to mention that if they didn't have a calculator at home, they could just "google" free calculator, and they could use one of the options that showed up.
Then a students said, "well, you could just type in your math equation right into the google search bar". What? So I tried it:
e^(-1). Yup. Yup.
Holy Moly! Genius-ness.