The volume of a cone is 1.8 cubic decimeters, how many cubic decimeters is larger than the volume of a cylinder with the same base and height.
一个圆锥体积是1.8立方分米，与它等底等高的圆柱体积比它大多少立方分米．
<gadget id="calculator">1.8 * 3</gadget>
<output>5.4</output>

<gadget id="calculator">5.4 - 1.8</gadget>
<output>3.6</output>

<result>3.6</result>