Equilibrium: JEE Main 2021 Chemistry question

The reaction rate for the reaction [PtCl₄]²$-$ + H₂O $\rightleftharpoons$ [Pt(H₂O)Cl₃]^$-$ + Cl^$-$ was measured as a function of concentrations of different species. It was observed that ${{ - d\left[ {{{\left[ {PtC{l_4}} \right]}^{2 - }}} \right]} \over {dt}} = 4.8 \times {10^{ - 5}}\left[ {{{\left[ {PtC{l_4}} \right]}^{2 - }}} \right] - 2.4 \times {10^{ - 3}}\left[ {{{\left[ {Pt({H_2}O)C{l_3}} \right]}^ - }} \right]\left[ {C{l^ - }} \right]$. where square brackets are used to denote molar concentrations. The equilibrium constant K_c = ____________ . (Nearest integer)