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

Input: Consider Input: A new building needed 9 windows . The builder had already installed 6 of them . If it takes 6 hours to install each window , how long will it take him to install the rest ?

Output: 18

Input: Consider Input: While playing at the arcade , Frank won 33 tickets playing ' whack a mole ' and 9 tickets playing ' skee ball ' . If he was trying to buy candy that cost 6 tickets a piece , how many could he buy ?

Output: 7

Input: Consider Input: At the fair there were 9 people in line for the bumper cars . If 6 of them got tired of waiting and left and 3 more got in line , how many people would be in line ?
Output: 6