Cowculator jokes

What does a cow use in school? A cowculator.

How do you count cows with a cowculator?

Idiot 1: Why are cows good in math?

Idiot 2: I don't know why.

Idiot 1: Because they have built-in cowculators!

What do cows use to do their homework? A cowculator.

How do you count cows? -- With a cowculator.