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: I have a pet golden retriever . Each year he gains 11 pounds . He is 8 years old . How many pounds does he weigh ?

SOLUTION: 88

PROBLEM: Mike has 8 orange marbles , he gave Sam 4 of the marbles . How many orange marbles does he now have ?

SOLUTION: 4

PROBLEM: William has 2 bottle caps . He buys 41 more . How many bottle caps does William have in all ?

SOLUTION:
43