On the scale (1/2000000) map, the distance between A and B is 5 cm. What is the actual distance between A and B in kilometers?
在比例尺(1/2000000)的地图上，量得甲、乙两地距离是5厘米，甲、乙两地的实际距离是多少千米．
<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">5 / (1/2_000_000) / 100_000</gadget>
<output>100</output>

<result>100</result>