Measure the drawing on a scale of 1:2000. The diameter of the circle is 1 cm. What is the actual diameter of the circle in meters?
在比例尺1：2000的图纸上量图，圆的直径是1厘米，这个圆的实际直径是多少米．
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

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

<gadget id="calculator">2_000 / 100</gadget>
<output>20</output>

<result>20</result>