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: Mrs. Hilt bought 6 hot dogs . Each hot dog cost 50 cents . How much money did she pay for all of the hot dogs ?

SOLUTION: 300

PROBLEM: Kate has 223 pennies . John has 388 pennies . How many more pennies does John have ?

SOLUTION: 165

PROBLEM: There are 5 oak trees currently in the park . Park workers will plant 4 more oak trees today . How many oak trees will the park have when the workers are finished ?

SOLUTION:
9