AI doesn't "know" anything. It's a big statistical probability model that predicts words based on context. It is very specifically BAD at math and dates etc. because it works based on words, not numbers. Models can't do math

Actually, it's what traditional software should be very good at, LLM is actually inherently kind of bad at it. Much work has gone into getting the LLMs to detect mathy stuff and try to shuffle off to some other technology that can cope with it.