To paint the ceiling of a room with a length of 8.5 meters and a width of 4.6 meters, 58.65 kilograms of paint are used in common. How many kilograms of paint are used per square meter on average?
粉刷一间长8.5米，宽4.6米的屋子的顶棚，共用涂料58.65千克，平均每平方米用涂料多少千克？
<gadget id="calculator">8.5 * 4.6</gadget>
<output>39.1</output>

<gadget id="calculator">58.65 / 39.1</gadget>
<output>1.5</output>

<result>1.5</result>