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

Ex Input:
Problem: the number of positive integer solutions for the equation x + y + z + t = 30 is

Ex Output:
3654


Ex Input:
Problem: a train 140 m long is running at 60 kmph . in how much time wiu it pass a platform 260 m long ?

Ex Output:
24 sec


Ex Input:
Problem: if 8 workers can build 8 cars in 8 days , then how many days would it take 6 workers to build 6 cars ?

Ex Output:

8