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.

Input: Consider Input: If Rose strolled for 4 hours at 2 miles per hour . How far did Rose go ?

Output: 8

Input: Consider Input: Fred has 709 green balloons , he gave Sandy 221 of the balloons . How many green balloons does he now have ?

Output: 488

Input: Consider Input: Mrs. Hilt reads 5 books a day . How many books does she read in 3 days ?
Output: 15