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: Martha has 2 peanuts . Joyce has 26 peanuts . If Joyce gives all of her peanuts to Martha , how many peanuts will Martha have ?
Example Output: 28

Example Input: Cade had 87 marbles . He gave 8 to Dylan . How many does he have left ?
Example Output: 79

Example Input: Mike found 6 seashells and 4 starfish , but 4 of the seashells were broken . How many unbroken seashells did Mike find ?
Example Output:
2