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:
Debra removes 22 apples from a jar . There were originally 57 apples in the jar . How many apples are left in the jar ?

Ex Output:
35


Ex Input:
Maria was making baggies of cookies with 8 cookies in each bag . If she had 5 chocolate chip cookies and 19 oatmeal cookies , how many baggies could she make ?

Ex Output:
3


Ex Input:
Pamela bought 9.8 ounces of sugar , and she spilled 5.2 ounces of it on the floor . How much is ?

Ex Output:

4.6