"Can you do Subtraction?
Take nine from eight." "Nine from eight I can't, you know," Alice replied very readily: "but--" "She can't do Subtraction," said the White Queen.

"Can you do Division?
Divide a loaf by a knife--what's the answer to that ?" "I suppose--" Alice was beginning, but the Red Queen answered for her.
"Bread-and-butter, of course.

Try another Subtraction sum.

Take a bone from a dog: what remains ?" Alice considered.

"The bone wouldn't remain, of course, if I took it--and the dog wouldn't remain; it would come to bite me--and I'm sure I shouldn't remain!" "Then you think nothing would remain ?" said the Red Queen.
"I think that's the answer." "Wrong, as usual," said the Red Queen: "the dog's temper would remain." "But I don't see how--" "Why, look here!" the Red Queen cried.