instruction:
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.
question:
There are 64 pigs in the barn . Some more come to join them . Now there are 86 pigs . How many pigs came to join them ?
answer:
22


question:
Paul got a box of 479 crayons for his birthday . At the end of the school year , he only had 134 left . How many crayons had been lost or given away ?
answer:
345


question:
A box of books weighs 42 pounds . Each book weighs 3 pounds . How many books are there in the box ?
answer:

14