The volume of a cuboid is 30cm**3, the length is 5cm, the width is 2cm, and the height is cm.
一个长方体的体积是30cm**3，长5cm，宽是2cm，高是多少cm．
<gadget id="calculator">30 / 5 / 2</gadget>
<output>3</output>

<result>3</result>