You are given a math word problem and you are supposed to apply multiplication or division 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: David had 4000 dollars invested for 0.25 of a year at a simple rate of 6.1 % . How much interest did he earn ?

Output: 61


Input: Consider Input: Eric has 3 boxes of pencils . Each box holds 9 pencils . How many pencils does Eric have ?

Output: 27


Input: Consider Input: There were 11 friends playing a video game online when 5 players quit . If each player left had 5 lives , how many lives did they have total ?


Output: 30