In Alice's Adventures in Wonderland, a character amusingly calculates simple math problems, such as four times five minus twelve and four times six minus thirteen, expressing frustration that they will never reach twenty. This reflects the whimsical and nonsensical nature of the story, where ordinary logic often seems turned upside down.
The quote highlights the surreal and playful tone of Lewis Carroll's writing, showcasing how characters often engage in illogical or amusing dialogues that challenge conventional thinking and add to the fantastical atmosphere of Wonderland.