2ClF3(s) <--> Cl2(g) + 3F2(g)

In order to establish the equilibrium, 5.45g of ClF3(s) was placed into a 500mL flask. When the equilibrium was established the Cl2(g) was measured at 0.0280 mol/L. 

The equilibrium contant for the equilibrium above is a.bc*10-d. The values of a,b,c and d are.