A cuboid stone is 10 decimeters long, 3.5 decimeters wide, and 2 decimeters thick. If the stone weighs 4.5 kilograms per cubic decimeter, how many kilograms does the stone weigh?
一块长方体石料，长10分米，宽3.5分米，厚2分米，如果每立方分米石料重4.5千克，这块石料重多少千克？
<gadget id="calculator">10 * 3.5 * 2 * 4.5</gadget>
<output>315</output>

<result>315</result>