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

Ex Input:
Problem: a snooker tournament charges $ 45.00 for vip seats and $ 20.00 for general admission ( " regular " seats ) . on a certain night , a total of 320 tickets were sold , for a total cost of $ 7500 . how many fewer tickets were sold that night for vip seats than for general admission seats ?

Ex Output:
276

Ex Input:
Problem: a can do a piece of work in 22 days and b alone can do it in 10 days . b works at it for 5 days and then leaves . a alone can finish the remaining work in

Ex Output:
11 days

Ex Input:
Problem: what is the least value of x , so that 23 x 57 is divisible by 3

Ex Output:
1