The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: how many integers between 324,700 and 458,600 have tens digit 1 and units digit 3 ?

Output: 1,33


Input: Consider Input: Problem: elvin ' s monthly telephone bill is the sum of the charge for the calls he made during the month and a fixed monthly charge for internet service . elvin ' s total telephone bill for january was $ 46 and elvin ' s total telephone bill for february was 76 $ . if elvin ' s charge for the calls he made in february was twice the charge for the calls he made in january , what is elvin ' s fixed monthly charge for internet service ?

Output: $ 16


Input: Consider Input: Problem: the length of the rectangular field is double its width . inside the field there is square shaped pond 9 m long . if the area of the pond is 1 / 8 of the area of the field . what is the length of the field ?


Output: 36