You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: adam was reading through his favorite book series . the first week he read 5 different books . the next week he read 8 books . how many books did he read total ?
Example Output: 13

Example Input: a chef used 39 cherries to make a pie . now he has 58 cherries left . how many cherries did he have before he made the pie ?
Example Output: 97

Example Input: billy was playing basketball with his friend . billy scored 7 points and his friend scored 9 points . what 's the difference between billy 's points and his friend 's points ?
Example Output:
2