TASK DEFINITION: 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.
PROBLEM: 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 ?

SOLUTION: 27

PROBLEM: 1 cell phone plan costs 49.95 dollars per month . The first 2500 minutes of use are free . Each minute thereafter costs 0.25 dollars . For a bill of 112.45 dollars , how many minutes over 2500 was the cell phone in use ?

SOLUTION: 250

PROBLEM: A waiter had 44 customers in his section . If 12 of them left and the rest of his tables had 8 people at each table , how many tables did he have ?

SOLUTION:
4