On a map with a scale of 1:5000000 km, the distance between A and B is 10 centimeters. How many kilometers are the actual distance between A and B?
在比例尺是1：5000000千米的地图上量得甲乙两城的距离是10厘米，实际甲乙两城相距多少千米．
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">10 / (1/5_000_000) / 100_000</gadget>
<output>500</output>

<result>500</result>