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: David has 8 bananas . He gets 50 more from Christopher . Later , David buys 9 cards at the store . How many bananas does David have in all ?

SOLUTION: 58

PROBLEM: I have 648 pencils . If I put 4 pencils in each pencil box , how many pencil boxes will I fill ?

SOLUTION: 162

PROBLEM: Marilyn starts with 51 bottle caps . She shares 36 with Nancy . How many bottle caps does Marilyn end with ?

SOLUTION:
15