On a scale of 1:6,000,000, the distance between A and B on the map is 4.5 cm. If a car starts from A at a speed of 80 kilometers per hour, how many hours will it take to reach B?
在比例尺1：6000000，甲乙两城的图上距离是4.5厘米，一辆汽车以每小时80千米的速度从甲城出发，要多少小时才能到乙城．
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">4.5 / (1/6_000_000) / 100_000 / 80</gadget>
<output>3.375</output>

<result>3.375</result>