The distance between A and B measured on a map with a scale of 1:2500000 is 7.2 cm. How long does it take for a car to travel 90 kilometers per hour from City A to City B?
在比例尺是1：2500000的地图上量的甲、乙两城之间的距离是7.2厘米，一辆汽车从甲城到乙城，每时行90千米，需要多少时？
<gadget id="calculator">1 / 2_500_000</gadget>
<output>1/2_500_000 = around 0</output>

<gadget id="calculator">7.2 / (1/2_500_000) / 100_000 / 90</gadget>
<output>2</output>

<result>2</result>