My aero engineering friend from university winds me up every time I see him saying that pi = 22/7 - I finally stopped getting angry, checked and it’s pretty good! I’m still glad he didn’t decide to design planes after he graduated though!

Fun fact, in the book Life Of Pi, the kid stays exactly 227 days on the boat with the tiger.

That was a near miss for the industry, real aerospace nerds use 355/113 ...