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:
Paul had 42 strawberries in his basket . He picked 78 more strawberries . How many strawberries did he have then ?

Ex Output:
120


Ex Input:
At Oliver 's Restaurant a group with 2 adults and 4 children came in to eat . If each meal cost 3 dollars , how much was the bill ?

Ex Output:
18


Ex Input:
Debby 's class is going on a field trip to the zoo . If each van can hold 4 people and there are 2 students and 6 adults going , how many vans will they need ?

Ex Output:

2