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.

Input: Consider Input: Gwen was organizing her book case making sure each of the shelves had exactly 4 books on it . If she had 5 shelves of mystery books and 3 shelves of picture books , how many books did she have total ?

Output: 32

Input: Consider Input: Wendy bought 4 new chairs and 4 new tables for her house . If she spent 6 minutes on each piece furniture putting it together , how many minutes did it take her to finish ?

Output: 48

Input: Consider Input: A pet shelter had 9 puppies when another 12 were brought in . If 3 puppies a day are adopted , how long would it take for all of them to be adopted ?
Output: 7