Detailed Instructions: 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.
See one example below:
Problem: Last year , 90171 people were born in a country , and 16320 people immigrated to it . How many new people began living in the country last year ?
Solution: 106491
Explanation: Total people living in the country = born - immigrated = 90171 - 16320 = 106491

Problem: Sam has 110 books . Joan has 102 books . How many books do they have together ?
Solution:
212