The perimeter of a rectangular piece of land is 56 meters, and the ratio of its length to width is 5:2. What is the area of the land in square meters.
一块长方形地的周长是56米，它的长与宽的比是5：2．这块地的面积是多少平方米．
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">28 * (5/7)</gadget>
<output>20</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">28 * (2/7)</gadget>
<output>8</output>

<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<result>160</result>