TASK DEFINITION: You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: A pet store had 36 siamese cats and 18 house cats . During a sale they sold 26 cats . How many cats do they have left ?

SOLUTION: 28

PROBLEM: There are 97 erasers in a box . Ernest has 17 erasers in a bag . Mark takes 97 erasers out of the box . How many erasers are left in the box ?

SOLUTION: 0

PROBLEM: At the arcade Dave won 11 tickets . If he spent 5 tickets on a beanie and later won 10 more tickets , how many would he have ?

SOLUTION:
16