In a rectangular chicken farm, one long side uses the original wall, and the other three sides are bamboo fences. It is known that the total length of the fence is 24 meters, and the width is long (1/2). How many square meters is the area of the chicken farm?
一个长方形养鸡场，一条长边利用原有墙，其余三面是竹篱笆，已知篱笆共长24米，宽是长的(1/2)，养鸡场的面积是多少平方米？
<gadget id="calculator">1 + 1 + 2</gadget>
<output>4</output>

<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 * 6 * 2</gadget>
<output>72</output>

<result>72</result>