On a map with a scale of 1:3000000, the distance between A and B on the map is 6 cm. A car drives from A to B at an average of 90 kilometers per hour. How long does it take to arrive?
在比例尺是1：3000000的地图上，甲、乙两地的图上距离是6厘米，一辆汽车从甲地开往乙地，平均每时行驶90千米，多长时间到达？
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">6 / (1/3_000_000) / 100_000 / 90</gadget>
<output>2</output>

<result>2</result>