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:
Alyssa had 129 cookies . Aiyanna has 140 . How many more cookies does Aiyanna have than Alyssa ?

Ex Output:
11


Ex Input:
For a birthday party George bought 10 regular sodas and 22 diet sodas . If his fridge would only hold 4 on each shelf , how many shelves would he fill up ?

Ex Output:
8


Ex Input:
Terrell hiked 8.2 miles on Saturday . Then , on Sunday , he hiked another 1.6 miles . How far did Terrell hike all together ?

Ex Output:

9.8