On a map with a scale of 1:5000000, what is the actual distance in kilometers represented by 10 centimeters?
在比例尺是1：5000000的地图上，10厘米表示的实际距离是多少千米．
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">10 / (1/5_000_000) / 1_000_000</gadget>
<output>50</output>

<result>50</result>