A cylinder with a volume of 60 cubic decimeters is cut into the largest cone, how many cubic decimeters are cut.
体积60立方分米的圆柱削成一个最大的圆锥，削去多少立方分米．
<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">60 * (2/3)</gadget>
<output>40</output>

<result>40</result>