TASK DEFINITION: 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.
PROBLEM: Melissa has 70 oranges . John takes 19 away . How many oranges will Melissa have ?

SOLUTION: 51

PROBLEM: Marilyn has 40 bananas that must be put away in boxes . Daniel comes to help and brings 10 cookies to share with Marilyn . If there are 8 boxes , how many bananas must go in each box ?

SOLUTION: 5

PROBLEM: Tim has 22 books . Mike has 20 books . How many books do they have together ?

SOLUTION:
42