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:
Sara grew 4 onions , Sally grew 5 onions , and Fred grew 9 onions . How many onions did they grow in all ?

Ex Output:
18

Ex Input:
Melanie picked 7 plums and 4 oranges from the orchard . She gave 3 plums to Sam . How many plums does she have now ?

Ex Output:
4

Ex Input:
Mrs. Sheridan has 11 cats . Mrs. Garrett has 24 cats . How many more cats does Mrs. Garrett have than Mrs. Sheridan ?

Ex Output:
13