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: A pet shelter had 9 puppies when another 12 were brought in . If 3 puppies a day are adopted , how long would it take for all of them to be adopted ?

A: 7
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Q: Carlos has 58 blocks . He gives 21 to Rachel . How many blocks will Carlos have ?

A: 37
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Q: Joan joined her school 's band . She bought a trumpet for $ 149.16 , a music tool for $ 9.98 , and a song book which was $ 4.14 . Joan found $ 8.65 in her pocket . How much did Joan spend at the music store ?

A:
163.28
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