It is known that copper weighs 8.9 kilograms per cubic decimeter. A cuboid copper rod with a length of 1.2 meters and a cross section of a square with side length of 0.5 decimeters weighs in kilograms.
已知每立方分米铜重8.9千克．一根长1.2米、横截面是边长0.5分米的正方形的长方体铜棒，重多少千克．
<gadget id="calculator">1.2 * 10</gadget>
<output>12</output>

<gadget id="calculator">0.5 * 0.5 * 12 * 8.9</gadget>
<output>26.7</output>

<result>26.7</result>