On a map with a scale of (1/4000000), the length of the road from A to B is 8 cm. How long does it take for a car to travel from A to B at a speed of 50 kilometers per hour?
在比例尺是(1/4000000)的地图上量得甲地到乙地公路长为8厘米，求一辆汽车以每小时50千米的速度从甲地到乙地需多少小时？
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">8 / (1/4_000_000) / 100_000 / 50</gadget>
<output>32/5 = around 6.4</output>

<result>32/5 = around 6.4</result>