The car team carried out fuel-saving activities, and the 4 cars saved a total of 2,400 kilograms of gasoline in half a year. How many kilograms of gasoline are saved per car per month on average?
汽车队开展节约用油活动，4辆车半年共节约汽油2400千克，平均每辆车每个月节约汽油多少千克？
<gadget id="calculator">2_400 / 6 / 4</gadget>
<output>100</output>

<result>100</result>