A cylinder with a capacity of 18 cubic decimeters is filled with water, and an iron block of a cone equal to its base and height is placed upside down inside. What is the volume of water overflowing at this time?
一个容积18立方分米的圆柱装满水，将一个与它等底等高的圆锥体铁块倒放在里面，这时溢出的水的体积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 * (1/3)</gadget>
<output>6</output>

<result>6</result>