The People's Liberation Army conducts field training from A to B. On a map with a scale of 1:60,000, the distance between A and B is 40 cm. It is required to arrive within 4 hours, how many kilometers per hour is the average march.
解放军进行野外训练，要从甲地到乙地，在一幅比例尺是1：60000的地图上，量得甲、乙两地的距离是40厘米．要求在4小时内到达，平均每小时要行军多少千米．
<gadget id="calculator">1 / 60_000</gadget>
<output>1/60_000 = around 0.000017</output>

<gadget id="calculator">40 / (1/60_000) / 100_000 / 4</gadget>
<output>6</output>

<result>6</result>