Question 814113
{{{
(m^4n^3)^2 / (m^6n)^4 * (m^3n^2)^3 / (2mn)^2=(m^8*n^6*m^9*n^6)/(m^24*n^4*4*m^2*n^2)
}}}

which simplifies to

{{{n^6/(4m^9)}}}