A 24 cm long iron wire exactly forms a square, what is the area of the square in square centimetres?
用一根24厘米长的铁丝正好围成一个正方形，这个正方形的面积是多少平方厘米．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

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

<result>36</result>