There is a rectangular experimental field with a length of 200 meters and a width of 100 meters. If it is to be drawn on a drawing with a scale of 1:2000, what is the area on the drawing?
有一块长200米，宽100米的长方形试验田，要将它画在比例尺是1：2000的图纸上，图上面积是多大？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">200 * 100 * (1/2_000) * 100 * 100 * (1/2_000)</gadget>
<output>50</output>

<result>50</result>