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: A vase can hold 5 flowers . If you had 6 carnations and 19 roses , how many vases would you need to hold the flowers ?

A: 5
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Q: Wendy uploaded 22 pictures from her phone and 2 from her camera to facebook . If she sorted the pics into 4 different albums with the same amount of pics in each album , how many pictures were in each of the albums ?

A: 6
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Q: At lunch a waiter had 10 customers and 5 of them did n't leave a tip . If he got $ 3 each from the ones who did tip , how much money did he earn ?

A:
15
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