If \(f(c)=\frac{3}{2c-3}\), find \(\frac{kn^2}{lm}\) when \(f^{-1}(c)\times c \times f(c)\) equals the simplified fraction (where k,l,m,n are all integers) \(\frac{kc+l}{mc+n}\)
kn^2/lm = 28/3.
