The perimeter of a rectangular flower bed is 54 meters, and the ratio of length to width is 5:4. What is the area of this rectangular flower bed in square meters?
一个长方形花坛的周长是54米，长和宽的比是5：4，这个长方形花坛的面积是多少平方米．
<gadget id="calculator">54 / 2</gadget>
<output>27</output>

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

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

<gadget id="calculator">27 * (5/9)</gadget>
<output>15</output>

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

<gadget id="calculator">27 * (4/9)</gadget>
<output>12</output>

<gadget id="calculator">15 * 12</gadget>
<output>180</output>

<result>180</result>