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

[Q]: Problem: assume that f ( 1 ) = 0 and f ( m + n ) = f ( m ) + f ( n ) + 4 ( 9 mn - 1 ) . for all natural numbers ( integers > 0 ) m and n . what is the value of f ( 17 ) ?
[A]: 4832


[Q]: Problem: the average weight of a group of boys is 30 kg . after a boy of weight 45 kg joins the group , the average weight of the group goes up by 1 kg . find the number of boys in the group originally ?
[A]: 14


[Q]: Problem: what is the lowest positive integer that is divisible by 4 through 6 , inclusive ?
[A]:
120