A rectangular vegetable garden is surrounded by a 32-meter-long fence against the wall. What is the maximum area of the vegetable garden in square meters?
用32米长的篱笆靠墙围一块长方形的菜园，菜园面积最大是多少平方米．
<gadget id="calculator">16 * 8</gadget>
<output>128</output>

<result>128</result>