The perimeter of a rectangular piece of land is 360 meters, and the ratio of length to width is 7:2. What is the area of this rectangular piece of land in square meters?
一块长方形地的周长是360米，长与宽的比是7：2，这块长方形地的面积是多少平方米？
<gadget id="calculator">7 + 2</gadget>
<output>9</output>

<gadget id="calculator">360 / 2 / 9</gadget>
<output>20</output>

<gadget id="calculator">20 * 7</gadget>
<output>140</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">140 * 40</gadget>
<output>5_600</output>

<result>5_600</result>