The volume of a cone is 15 cubic decimeters, the area of the base is 300 square centimeters, what is the height?
一个圆锥体的体积是15立方分米，底面积是300平方厘米，高是多少．
<gadget id="calculator">1 / 300 / 100</gadget>
<output>1/30_000 = around 0.000033</output>

<gadget id="calculator">15 / (1/30_000) / 300 / 100</gadget>
<output>15</output>

<result>15</result>