A cube of stone with side length 2dm, 2.5kg per cubic decimeter of stone, how many kilograms does this stone weigh?
一块正方体石料，棱长2dm，每立方分米石料中2.5千克，这块石料重多少千克？
<gadget id="calculator">2 * 2 * 2 * 2.5</gadget>
<output>20</output>

<result>20</result>