You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Input: Consider Input: At the fair Adam bought 13 tickets . After riding the ferris wheel he had 4 tickets left . If each ticket cost 9 dollars , how much money did Adam spend riding the ferris wheel ?

Output: 81

Input: Consider Input: Fred has 90 cents in his bank . How many dimes does Fred have ?

Output: 9

Input: Consider Input: While playing a trivia game , Frank answered 3 questions correct in the first half and 2 questions correct in the second half . If each question was worth 3 points , what was his final score ?
Output: 15