On a map with a scale of 1:6,000,000, the distance between A and B is measured as 5cm. It takes 5 hours for a truck to drive from A to B. How many kilometers does it travel per hour?
在一副比例尺为1：6000000的地图上量得甲乙两地的图上距离为5cm，一辆货车从甲地开往乙地用了5小时，每小时行多少千米？
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">5 / (1/6_000_000) / 100_000 / 5</gadget>
<output>60</output>

<result>60</result>