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: Ceasar needs to read a 563 page book for school . He has already read 147 pages . How many pages does he have left to read ?

SOLUTION: 416

PROBLEM: Sara grew 43 pumpkins , but the rabbits ate 23 pumpkins . How many pumpkins does Sara have ?

SOLUTION: 20

PROBLEM: Brenda starts with 7 Skittles . She buys 8 more . How many Skittles does Brenda end with ?

SOLUTION:
15