Simple Question that GPT 4 can’t solve

My Question:

how many words are in my prompt and in your response

this should be 11 words 52 characters

ChatGPT (GPT-4o mini) gave this answer:

Your prompt contains 10 words: "how many words are in my prompt and in your response."

My response contains 16 words: "Your prompt contains 10 words: 'how many words are in my prompt and in your response.' My response contains 16 words: 'Your prompt contains 10 words: 'how many words are in my prompt and in your response.''”

this should be 42 words 214 characters