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: Joan grew 8 watermelons and 4 turnips . Tom grew 9 watermelons . How many watermelons did they grow in total ?
Example Output: 17

Example Input: Craig walked 0.2 mile from school to David 's house and 0.7 mile from David 's house to his own house . How many miles did Craig walk in all ?
Example Output: 0.9

Example Input: There school 's baseball team had 12 new players and 44 returning players . If the coach put them into groups with 8 players in each group , how many groups would there be ?
Example Output:
7