If a cylinder with a volume of 15 cubic centimeters is cut into the largest cone, how many cubic centimeters of cylinders need to be cut.
一个体积为15立方厘米的圆柱体削成一个最大的圆锥，需要削去多少立方厘米的圆柱．
<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">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>