At 700K, the equilibrium constant $K_P$ for the reaction $2S{O_3}_{\left(g\right)}\rightleftharpoons 2S{O}_{2\left(g\right)}+O_{2\left(g\right)}$ is $5.6\times {10}^{-3}atm$ The value of $K_C$ is __________ $\times {10}^{-4}mol/L$ for this reaction at the same temperature ?(R=0.08Latm/mol/K)