You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

Ex Input:
Christine wandered 20 miles at 4 miles per hour . How long did Christine wander ?

Ex Output:
5


Ex Input:
Mrs. Hilt reads 5 books a day . How many books does she read in 3 days ?

Ex Output:
15


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