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:
Kelly bought 0.1 pounds of peanuts and 0.4 pounds of raisins . How many pounds of snacks did she buy in all ?

Ex Output:
0.5


Ex Input:
At the schools book fair Sam bought 13 adventure books and 17 mystery books . If 15 of the books were used , how many new books did he buy ?

Ex Output:
15


Ex Input:
Melissa has 88 bananas . She shares 4 with Joshua . How many bananas will Melissa have ?

Ex Output:

84