There is a rectangular test field on a 1:2000 map. Its length is 25 cm and its width is 8 cm. What is the actual area of the test field?
在一幅1：2000的地图上有一块长方形试验田，量得它的长25厘米，宽是8厘米，这块试验田的实际面积是多少？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">25 / (1/2_000) / 100</gadget>
<output>500</output>

<gadget id="calculator">8 / (1/2_000) / 100 / 10_000</gadget>
<output>2/125 = around 0.016</output>

<gadget id="calculator">500 * (2/125)</gadget>
<output>8</output>

<result>8</result>