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 saved up 4 dollars . If he received another 11 dollars for his allowance , how many 5 dollar toys could he buy ?

Ex Output:
3


Ex Input:
Ron weighed 2 colored metal balls during a science class . The blue ball weighed 6 pounds and the brown ball weighed 3.12 pounds . If Ron places both balls on the scale at the same time , what will the scale read ?

Ex Output:
9.12


Ex Input:
Brenda has 34 apples . She gets 37 more from Willie . How many apples does Brenda have in all ?

Ex Output:

71