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: 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: Mrs. Hilt looked at her car 's odometer before a trip . The odometer showed that she had traveled 212.3 miles . When she stopped for lunch , the odometer read 372 . How many miles had she traveled ?

Output: 159.7


Input: Consider Input: At the fair there were 10 people in line for the bumper cars . If 2 of them got tired of waiting and left and 2 more got in line , how many people would be in line ?


Output: 10


