The volume of a cone is 31.4 cubic decimeters, the diameter of the base is 2 decimeters, and the height is how many decimeters.
一个圆锥的体积是31.4立方分米，底面直径是2分米，高是多少分米．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">3 / 3.14</gadget>
<output>0.955414</output>

<gadget id="calculator">31.4 * 0.955414</gadget>
<output>30</output>

<result>30</result>