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

Input: Consider Input: Scott has 4 tickets . Ernest has with 9 tickets . Ernest finds another 72 . How many tickets does Ernest end with ?

Output: 81


Input: Consider Input: Fred has 40 baseball cards . Keith bought 22 of Fred 's baseball cards . How many baseball cards does Fred have now ?

Output: 18


Input: Consider Input: Chloe was organizing her book case making sure each of the shelves had exactly 6 books on it . If she had 5 shelves of mystery books and 4 shelves of picture books , how many books did she have total ?


Output: 54