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: Mark has 13 trees in his backyard . If he plants 12 more , how many trees will he have ?
Example Output: 25

Example Input: There were 58 geese and 37 ducks in the marsh . How many birds were in the marsh ?
Example Output: 95

Example Input: Isabel uploaded 2 pictures from her phone and 4 from her camera to facebook . If she sorted the pics into 3 different albums with the same amount of pics in each album , how many pictures were in each of the albums ?
Example Output:
2