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.

Example Input: there are some rooms in a building . 35 of them are classrooms 10 of them are office and the remaining 6 are reading rooms . how many rooms are in the building ?
Example Output: 51

Example Input: if the all the participants found a total 40 eggs from the club house 25 eggs from the park and 15 eggs from the town hall how many easter eggs were found that day ?
Example Output: 80

Example Input: dan 's high school played 18 baseball games this year and 2 were at night . the team won most of their games . they were defeated during 3 games . how many games did they win ?
Example Output:
15