Assume that delta g of formation, at standard temperature and pressure is independent for the following reacti?

Assume that delta g of formation, at standard temperature and pressure is independent for the following reaction when we take nickel and carbon monoxide to make nickel carbonate (which is nickel with 4 carbon dioxides associated with it.) Given the standard free energies of formation for carbon monoxide gas and nickel with 4 carbon monoxides hooked around it, are -137.3 kJ/mol and -587.4 kJ/mol respectively. Calculate the equilibrium constant of this reaction at 1397*C