On a map with a scale of 1:4500000, the distance between Guangxi and Shanghai is 8 cm. What is the actual distance between Guangxi and Shanghai in kilometers?
在比例尺1：4500000的地图上，量得广西和上海两地的距离为8厘米，广西和上海的实际距离约为多少千米．
<gadget id="calculator">1 / 4_500_000</gadget>
<output>1/4_500_000 = around 0</output>

<gadget id="calculator">8 / (1/4_500_000) / 100_000</gadget>
<output>360</output>

<result>360</result>