Well if you think…there are 2 cups in every pint. To figure out your question you need to know that. Next you need to know how to multiply. You would multiply 9 times 2. If you dont know that answer then yiu can do the 9's trick. You would have all or your 10 fingers up,you would pit down 2 fingers. How many fingers are you holding up now? 8 right?! Now add the "teen". 18. Theres your answer! Its 18