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

Ex Input:
Problem: 1370 , x , 1070 , - 180 , - 6430

Ex Output:
1320


Ex Input:
Problem: find large number from below question the difference of two numbers is 1360 . on dividing the larger number by the smaller , we get 6 as quotient and the 15 as remainder

Ex Output:
162


Ex Input:
Problem: what is the ratio of 3 / 7 to the product 3 * ( 7 / 3 ) ?

Ex Output:

3 : 4