Solution:
It depends on how the question was written.
If the question was written as:
then 9m^7/3m^5=3m^2, and the answer is therefore 3m^2/n.
However, the way the question is written (on the same line), then the evaluation is left-to-right, so the n is multiplied after the division by 3m^5, and is therefore equivalent to: and the answer is 3m^2n.