At sea level, what would the P_AO₂ equal if the P_B is 760 mm Hg, the PaCO₂ is 40 mm Hg with F_IO₂ 1.0?

Question

At sea level, what would the PAO2 equal if the PB is 760 mm Hg, the PaCO2 is 40 mm Hg with FIO2 1.0?