They use a cow-culator! Ba-dum-tsss!
Electricity.
They're used to people 'goblin' them!
Because he always gives sound advice. Ba dum tsss.
MOO-barak!
They can't even.
Trigger-nometry... I'll see myself out.
A cow-culator. haha haha ha ... ok, I'll leave.
You use a cow-culator. Or you round them up. Or any other method the commenters want.