On a map with a scale of 1:4,000,000, the distance between A and B on the map is 3.2 cm. How long does it take for a car to drive from city A to city B at a speed of 80 kilometers per hour?
在比例尺是1：4,000,000的地图上量得A，B两地的图上距离是3.2厘米．一辆汽车以每时80千米的速度从A城开到B城，需要多少时间？
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">3.2 / (1/4_000_000) / 100_000 / 80</gadget>
<output>1.6</output>

<result>1.6</result>