On a map with a scale of 1:9000000, the distance between Wuhan and Beijing is 12 centimeters, so how many kilometers is the actual distance between Wuhan and Beijing?
在比例尺1：9000000的地图上，量得武汉到北京的距离是12厘米，那么武汉到北京的实际距离是多少千米．
<gadget id="calculator">1 / 9_000_000</gadget>
<output>1/9_000_000 = around 0</output>

<gadget id="calculator">12 / (1/9_000_000) / 100_000</gadget>
<output>1_080</output>

<result>1_080</result>