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

[Q]: Problem: 33 1 / 3 % of 36 ?
[A]: 12 number


[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: a man whose speed is 8 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 3 kmph , find his average speed for the total journey ?
[A]:
6.8 kmp