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.

Q: Kylie was collecting coins . She got 15 coins from her piggy bank and 13 coins from her brother . Her father gave Kylie 8 coins . Kylie gave 21 of the coins to her friend Laura . How many coins did Kylie have left ?

A: 15
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Q: At a restaurant each adult meal costs $ 2 and kids eat free . If a group of 15 people came in and 9 were kids , how much would it cost for the group to eat ?

A: 12
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Q: Robin 's class is going on a field trip to the zoo . If each van can hold 8 people and there are 22 students and 2 adults going , how many vans will they need ?

A:
3
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