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.

Ex Input:
Megan has 19 seashells . How many more seashells does she need to find to have 25 seashells in her collection ?

Ex Output:
6


Ex Input:
Mary had 7 nickels in her bank . Her dad gave her 5 nickels . How many nickels does Mary have now ?

Ex Output:
12


Ex Input:
The schools debate team had 28 boys and 4 girls on it . If they were split into groups of 4 how many groups could they make ?

Ex Output:

8