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: The value of a sport utility vehicle this year is 16000 dollars , which is 0.8 of what its value was last year . How much is the value of the vehicle last year ?

Output: 20000

Input: Consider Input: A chocolate chip cookie recipe calls for 2 cups of chocolate chips . You want to make 23 recipes for a bake sale . How many cups of chocolate chips will be needed to make all the cookie recipes ?

Output: 46

Input: Consider Input: Evelyn starts with 18 bottle caps . She finds another 63 . How many bottle caps does Evelyn end with ?
Output: 81