On a map with a scale of 1:5000000, the distance between A and B on the map is 6cm. A car travels from A to B for 6 hours. How many kilometers per hour does the car drive on average?
在比例尺是1：5000000的地图上量得甲、乙两地图上距离是6cm，一辆汽车从甲地到乙地行驶了6时，这辆汽车平均每小时行多少千米？
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">6 / (1/5_000_000) / 100_000 / 6</gadget>
<output>50</output>

<result>50</result>