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.

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

Output: 20


Input: Consider Input: A pet supply store has 600 bags of dog food and 327 bags of cat food . How many more bags of dog food are there than cat food ?

Output: 273


Input: Consider Input: Mrs. Wong had 30 Valentines . She gave 8 Valentines to her children . How many does she have left ?


Output: 22