instruction:
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.
question:
Mike had 16 video games but 8 of them were n't working . If he wanted to sell the working games for $ 7 each , how much money could he earn ?
answer:
56


question:
Keith found 6 seashells , Jessica found 8 seashells , and Tim found 7 seashells on the beach . When they cleaned them , they discovered that 3 were cracked . How many seashells did they find together ?
answer:
21


question:
A magician was selling magic card decks for 5 dollars each . If he started with 14 decks and by the end of the day he had 5 left , how much money did he earn ?
answer:

45