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:
Heather starts with 86 blocks . She shares 41 with Jose . How many blocks does Heather end with ?

Ex Output:
45


Ex Input:
A pet shelter had 3 puppies when another 3 were brought in . If 3 puppies a day are adopted , how long would it take for all of them to be adopted ?

Ex Output:
2


Ex Input:
Roger had 29 dollars . For his birthday he got 20 more dollars but spent 34 on a new game . How much money does he have now ?

Ex Output:

15