Today I wish I could have a...."Homework Machine"

HOMEWORK MACHINE

The Homework Machine, Oh the Homework Machine,
Most perfect contraction that’s never been seen.

Just put in your homework, then drop it a dime,
Snap on the switch, and in ten seconds’ time,

Your homework comes out, quick as clean as can be.
Here it is – nine plus four? And the answer is “three”.
Three?
Oh me…
I guess it’s not as perfect
As I thought it would be.