For the following reaction:

2 A_(aq) + 2 B_(aq) 3 C_(aq)

Calculate the magnitude of K_c (don't report the units) assuming the following composition at equilibrium:

[A] = 0.933 mol L^-1

[B] = 0.886 mol L^-1

[C] = 0.899 mol L^-1

^{Thank you.}