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.

Ex Input:
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 ?

Ex Output:
45


Ex Input:
At the fair there were 10 people in line for the bumper cars . If 2 of them got tired of waiting and left and 2 more got in line , how many people would be in line ?

Ex Output:
10


Ex Input:
Haley had 27 music files and 42 video files on her flash drive . If she deleted 11 of the files , how many files were still on her flash drive ?

Ex Output:

58