What is the volume of a square wire frame surrounded by 12 meters long wire?
用12米长的铁丝围成一个正方形铁丝框，体积是多少．
<gadget id="calculator">12 / 12</gadget>
<output>1</output>

<gadget id="calculator">1 * 1 * 1</gadget>
<output>1</output>

<result>1</result>