After advocating "energy saving and emission reduction", 12 vehicles of a certain automobile transportation company saved 243 kg of gasoline in 5 days. How many kilograms of gasoline are saved per car per day on average?
倡导"节能减排"后，某汽车运输公司12辆汽车5天节约汽油243千克．平均每辆汽车每天节约汽油多少千克？
<gadget id="calculator">243 / 5 / 12</gadget>
<output>81/20 = around 4.05</output>

<result>81/20 = around 4.05</result>