A 24 decimeter long iron wire surrounds a square, what is the area of the square?
把一根长24分米的铁丝围城一个正方形，这个正方形的面积是多少平方分米．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

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

<result>36</result>