Too advanced for me, but it certainly looks interesting.
Humpty Dumpty looked doubtful, " I 'd rather see that done on paper," he said.
Alice couldn't help smiling as she took out her memorandum-book, and worked the sum for him:
Humpty Dumpty took the book, and looked at it carefully. "That seems to be done right-" he began.
"You're holding it upside down!" Alice interrupted.
"To be sure I was!" Humpty Dumpty said gaily, as she turned it round for him. "I thought it looked a little queer. As I was saying, that seems to be done right though I haven't time to look it over thoroughly just now---and that shows that there are three hundred and sixty-four days when you might get unbirthday presents ---"