X: Daddy what’s 100 x 15?
Daddy: 1500.
X: What’s 15 x 70?
Daddy: That’s 1050.
X: That means 15 x 170 is 2550.

(I wish I learned math like they learn math. They are already so much faster than me.)

This was their conversation while playing Mario Cart, by the way. Maybe it doesn’t kill brain cells…