On a 1:6000000 map, the distance between the two places is measured to be 4.5 centimeters. What is the actual distance in kilometers between the two places?
在1：6000000的地图上，量得两地的距离是4.5厘米，两地的实际距离是多少千米．
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">4.5 / (1/6_000_000) / 100_000</gadget>
<output>270</output>

<result>270</result>