A cuboid with a square base, the sum of its sides is 36 decimeters, and its height is 5 decimeters, what is its volume in cubic decimeters?
一个底面是正方形的长方体，它的所有棱长的和是36分米，高是5分米，则它的体积是多少立方分米．
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">36 - 20</gadget>
<output>16</output>

<gadget id="calculator">16 / 8</gadget>
<output>2</output>

<gadget id="calculator">2 * 2 * 5</gadget>
<output>20</output>

<result>20</result>