A rectangular flowerbed has a circumference of 108 meters and a width equal to 80% of its length. What is the area of this flowerbed?
一个长方形花圃，周长108米，宽是长的80%，这个花圃的面积有多大？
<gadget id="calculator">108 / 2</gadget>
<output>54</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">54 * (5/9)</gadget>
<output>30</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">54 * (4/9)</gadget>
<output>24</output>

<gadget id="calculator">30 * 24</gadget>
<output>720</output>

<result>720</result>