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.

Input: Consider Input: Nancy picked 12 carrots from her garden . If she threw out 2 of them and then picked 21 more the next day , how many carrots would she have total ?

Output: 31


Input: Consider Input: Irwin 's family went on a camping trip in the mountains . On the first day , they hiked from their car to the campsite . First , they hiked 0.2 mile from the car to a stream , and 0.4 mile from the stream to a meadow . Then they hiked 0.1 mile from the meadow to the campsite . How many miles did Irwin 's family hike in all ?

Output: 0.7


Input: Consider Input: Beka flew 873 miles to visit her aunt . Jackson flew 563 miles to visit his aunt . How many more miles did Beka fly than Jackson ?


Output: 310