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.

Ex 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 ?

Ex Output:
20000


Ex Input:
The library is divided into different sections for different type of books . The science fiction section has 8 books . If each book has 478 pages , how many pages do all the books have in total ?

Ex Output:
3824


Ex Input:
Michelle has 2 crayons . Janet has 2 crayons . If Janet gives all of her crayons to Michelle , how many crayons will Michelle have ?

Ex Output:

4