On a map with a scale of 1:1,000,000, the distance between A and B is 5.6 cm. If a train travels 80 kilometers per hour, how long does it take for the train to travel between A and B?
在一幅比例尺1：1000000的地图上，量得甲、乙两地之间的距离是5.6厘米，若一列火车每小时行80千米，求这列火车往返甲、乙两地要多少小时？
<gadget id="calculator">1 / 1_000_000</gadget>
<output>1/1_000_000 = around 0.000001</output>

<gadget id="calculator">5.6 / (1/1_000_000) / 100_000 / 80</gadget>
<output>0.7</output>

<result>0.7</result>