The actual distance from A to B is 100 kilometers, how many centimeters should it be on a map with a scale of (1/50000000).
甲地到乙地的实际距离是100千米，在比例尺是(1/50000000)的地图上应该是多少厘米．
<gadget id="calculator">1 / 50_000_000</gadget>
<output>1/50_000_000 = around 0</output>

<gadget id="calculator">100 * 100_000 * (1/50_000_000)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>