Expanding Brain

86 x 42 = (40x86) + (2x86) = 172 + 3440 = 3612 = 86 x 42 ( I did all of this in my head btw )

why is this the same technique that i used? *uses asian kid math*

this is true

Bullshit
=)

no calculator gang be on your doorstep if you don’t cease to use your voice