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: henry had $ 54 . later he sold some of his old toys and got another $ 2 . how much money does he have total ?
Example Output: 56

Example Input: charlie has 31 more snowballs than lucy . she has 19 snowballs . how many does charlie have ?
Example Output: 50

Example Input: adam needed to climb 96 stair steps to reach the rooftop . he already climbed 74 . how many stair steps do left for adam to climb now ?
Example Output:
22