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

Example Input: Frank and his friend were buying trick decks from the magic shop for 7 dollars each . How much did they spend if Frank bought 3 decks and his friend bought 2 decks ?
Example Output: 35

Example Input: John had 5 action figures , but needed 7 total for a complete collection . If each one costs $ 5 , how much money would he need to finish his collection ?
Example Output: 10

Example Input: Bianca was organizing her book case making sure each of the shelves had exactly 8 books on it . If she had 5 shelves of mystery books and 4 shelves of picture books , how many books did she have total ?
Example Output:
72

