A rectangle with the largest area is surrounded by a wire 32 cm long. What is the largest area of the rectangle?
用一根长32厘米的铁丝围成一个面积最大的长方形，长方形的面积最大是多少．
<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

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

<result>64</result>