The scale on the map is 1:500000, the actual distance is 10 kilometers, what is the distance on the map.
地图上的比例尺是1：500000，实际距离10千米，图上距离是多少．
<gadget id="calculator">1_000 * 1_000</gadget>
<output>1_000_000</output>

<gadget id="calculator">1 / 500_000</gadget>
<output>1/500_000 = around 0.000002</output>

<gadget id="calculator">1_000_000 * (1/500_000)</gadget>
<output>2</output>

<result>2</result>