What is the area of a square surrounded by a wire 14.4 meters long?
用一根长14.4米的铁丝围成一个正方形，它的面积是多少平方米？
<gadget id="calculator">14.4 / 4</gadget>
<output>3.6</output>

<gadget id="calculator">3.6 * 3.6</gadget>
<output>12.96</output>

<result>12.96</result>