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: A car company produced 3884 cars in North America and 2871 cars in Europe . How many cars is that in all ?
Example Output: 6755

Example Input: A vase can hold 5 flowers . If you had 6 carnations and 19 roses , how many vases would you need to hold the flowers ?
Example Output: 5

Example Input: Each year , salmon travel upstream , going from the ocean to the rivers where they were born . This year , 712261 male and 259378 female salmon returned to their rivers . How many salmon made the trip ?
Example Output:
971639