The school has a rectangular flower bed with a circumference of 72 meters and a ratio of length to width of 7:2. What is the area of this flower bed in square meters?
学校有一块长方形的花坛，周长为72米，长与宽的比是7：2．这个花坛的面积是多少平方米？
<gadget id="calculator">72 / 2</gadget>
<output>36</output>

<gadget id="calculator">7 + 2</gadget>
<output>9</output>

<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">36 * (7/9)</gadget>
<output>28</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">36 * (2/9)</gadget>
<output>8</output>

<gadget id="calculator">28 * 8</gadget>
<output>224</output>

<result>224</result>