A piece of cylindrical steel is cut into the largest cone, and the cut part weighs 6 kg. How much does this piece of cylindrical steel weigh in kilograms?
把一段圆柱形钢材削成一个最大的圆锥，削掉的部分重6千克，这段圆柱形钢材重多少千克．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 / (2/3)</gadget>
<output>9</output>

<result>9</result>