A 2.3-kg steel gasoline can holds 18.5 L of gasoline when full. The density of steel is 7.80 Af- 103 kg/m3, and the density of gasoline is 0.680 Af- 103 kg/m3. What is the average density, in kilograms per cubic meter, of the full gas can, taking into account the volume occupied by steel as well as by gasoline?