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.

Example Input: There are 30 candies in Kathy 's candy collection . If the candies are organized into 10 groups , how big is each group ?
Example Output: 3

Example Input: Aaron starts with 81 erasers . He gives 34 to Doris . How many erasers does Aaron end with ?
Example Output: 47

Example Input: Kimberly went to the store 3 times last month . She buys 7 peanuts each time she goes to the store . How many peanuts did Kimberly buy last month ?
Example Output:
21