A cube of wood has an edge length of 2.5 meters and weighs 0.4 kg per cubic decimeter. How much does this block weigh?
一个正方体木块，它的棱长是2.5米，每立方分米重0.4千克，这个木块重多少千克？
<gadget id="calculator">2.5 * 10</gadget>
<output>25</output>

<gadget id="calculator">25 * 25 * 25</gadget>
<output>15_625</output>

<gadget id="calculator">15_625 * 0.4</gadget>
<output>6_250</output>

<result>6_250</result>