A fence is built around a square vegetable patch with one side of the wall. The fence is 24 meters long. What is the area of the vegetable patch in square meters?
在一个一面靠墙的正方形菜地围一个篱笆，篱笆长24米，这个菜地的面积是多少平方米？
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>