TASK DEFINITION: You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: kaleb had 67 cherries . after eating some he had 42 left . how many cherries did kaleb eat ?

SOLUTION: 25

PROBLEM: ned was buying books about astronomy . he bought 8 books about the planets and 4 about the space program . how many books did he buy total ?

SOLUTION: 12

PROBLEM: for the walls of the house he would use 9 large planks of wood . if each plank of wood needs 8 pieces of nails to be secured how many nails does john need for the house wall ?

SOLUTION:
72