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:
billy bought 5 boxes of books at a yard sale . if each box had 7 books how many books did he buy ?

Ex Output:
35


Ex Input:
the mini library also has a section for the classics . if jack has a collection of 6 classic authors with each author having 33 books how many books does he have in the classics section ?

Ex Output:
198


Ex Input:
it has been tradition in shiela 's home to hang a sock above the fireplace for each member of the family . this year she placed a cinnamon ball every day in the socks for 5 of her family members . how long can she do this if she bought 50 cinnamon balls ?

Ex Output:

10