What is the area of the largest square surrounded by a wire 24 meters long?
用一根长24米的铁丝围成一个最大的正方形，这个正方形的面积是多少．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>