On a map with a scale of (1/6000000), what is the actual distance in kilometers represented by 3 centimeters?
在比例尺是(1/6000000)的地图上，3厘米表示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">3 / (1/6_000_000) / 100_000</gadget>
<output>180</output>

<result>180</result>