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

Q: Mrs. Hilt reads 5 books a day . How many books does she read in 3 days ?

A: 15
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Q: Lizette has 813 stamps . Lizette has 125 more stamps than Minerva . How many stamps does Minerva have ?

A: 688
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Q: Ronald has 13 blocks . Martha has with 4 blocks . Martha finds another 80 . How many blocks does Martha end with ?

A:
84
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