On a map with a scale of 1:800000, the measured distance between A and B is 15 cm. What is the actual distance between A and B in kilometers?
在比例尺是1：800000的地图上，量的甲、乙两地之间的距离是15厘米，甲乙两地的实际距离是多少千米．
<gadget id="calculator">1 / 800_000</gadget>
<output>1/800_000 = around 0.000001</output>

<gadget id="calculator">15 / (1/800_000) / 100_000</gadget>
<output>120</output>

<result>120</result>