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: There school 's baseball team had 2 new players and 6 returning players . If the coach put them into groups with 4 players in each group , how many groups would there be ?
Example Output: 2

Example Input: John had 33 socks . If he threw away 19 old ones that did n't fit and bought 13 new ones , how many socks would he have ?
Example Output: 27

Example Input: There are 4 cards . 3 cards more are added . How many are there total ?
Example Output:
7