The volume of a cuboid is 90cm**2, its length is 6cm, its width is 5cm, and its height is in cm.
一个长方体的体积是90cm**2，它的长是6cm，宽是5cm，高是多少cm．
<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">90 / 30</gadget>
<output>3</output>

<result>3</result>