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: There are 5 flowers and 3 bees . How many fewer bees are there than flowers ?
Example Output: 2

Example Input: Haley had 27 music files and 42 video files on her flash drive . If she deleted 11 of the files , how many files were still on her flash drive ?
Example Output: 58

Example Input: Vanessa had 16 music files and 48 video files on her flash drive . If she deleted 30 of the files , how many files were still on her flash drive ?
Example Output:
34