The volume of a cone is 30 cubic meters, its base area is 15m**2, what is its height in meters.
一个圆锥的体积是30立方米，它的底面积是15m**2，它的高是多少米．
<gadget id="calculator">3 / 15</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">30 * (1/5)</gadget>
<output>6</output>

<result>6</result>