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

Input: Consider Input: At lunch a waiter had 7 customers and 4 of them did n't leave a tip . If he got $ 9 each from the ones who did tip , how much money did he earn ?

Output: 27


Input: Consider Input: Rachel bought two coloring books . One had 24 pictures and the other had 39 . After one week she had already colored 4 of the pictures . How many pictures does she still have to color ?

Output: 59


Input: Consider Input: If 0.6667 of a pound is worth 8 dollars , how much is 0.75 pounds worth ?


Output: 9