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.

Example Input: A waiter had 9 tables he was waiting on , with 2 women and 6 men at each table . How many customers total did the waiter have ?
Example Output: 72

Example Input: For a birthday party Tom bought 4 regular sodas and 52 diet sodas . If his fridge would only hold 7 on each shelf , how many shelves would he fill up ?
Example Output: 8

Example Input: A store had 34 oranges in a bin . If they threw away 20 of the old ones and put 13 new ones in the bin how many would be in the bin ?
Example Output:
27

