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.
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Question: While playing at the arcade , Ned won 26 tickets playing ' whack a mole ' and 19 tickets playing ' skee ball ' . If he was trying to buy candy that cost 9 tickets a piece , how many could he buy ?

Answer: 5


Question: A company invited 18 people to a luncheon , but 12 of them did n't show up . If the tables they had held 3 people each , how many tables do they need ?

Answer: 2


Question: Mike is at the library helping put away books . There are 82 book to put away total but a librarian takes 10 of them and leaves Mike with the rest . If he can fit 9 books on a shelf , how many shelves will he need ?

Answer:
8