Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

Input: Consider Input: a waiter had 18 customers . if 6 left how many customers would the waiter still have ?

Output: 12

Input: Consider Input: mike collected 71 cans to recycle on monday and 27 more on tuesday . how many cans did mike collect all together ?

Output: 98

Input: Consider Input: the school 's baseball team had 2 new players and 22 returning players . if the coach put them into groups with 3 players in each group how many groups would there be ?
Output: 8