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

Q: At Oliver 's Restaurant a group with 2 adults and 4 children came in to eat . If each meal cost 3 dollars , how much was the bill ?

A: 18
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Q: Mrs. Hilt baked pies last weekend for a holiday dinner . She baked 16 pecan pies and 14 apples pies . If she wants to arrange all of the pies in rows of 5 pies each , how many rows will she have ?

A: 6
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Q: Luke was helping the cafeteria workers pick up lunch trays , but he could only carry 4 trays at a time . If he had to pick up 20 trays from one table and 16 trays from another , how many trips will he make ?

A:
9
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