A cylindrical piece of wood weighs 12 kilograms. If it is cut into the largest cone, how many kilograms will be cut off?
一根圆柱形木料重12千克，削成最大的一个圆锥，削去多少千克．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 * (2/3)</gadget>
<output>8</output>

<result>8</result>