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:
There are 7.75 gallons of water in Becky 's fish tank . If Becky adds 7 gallons more , how many gallons will there be in all ?

Ex Output:
14.75


Ex Input:
Shawn has 13 blocks . Mildred has with 2 blocks . Mildred finds another 84 . How many blocks does Mildred end with ?

Ex Output:
86


Ex Input:
For the school bake sale Katie made pastries . She baked 7 cupcakes and 5 cookies . After the sale she had 8 to take back home . How many pastries did she sell ?

Ex Output:

4