On a map with a scale of 1:6,000,000, the distance from Nanjing to Beijing is 15 centimeters. A plane is preparing to fly from Nanjing to Beijing, flying 500 kilometers per hour, how many hours will it arrive?
在比例尺为1：6000000的地图上量得南京到北京的距离是15厘米．一架架飞机准备从南京飞到北京，每小时飞行500千米，几小时后到达？
<gadget id="calculator">1 / 6_000_000</gadget>
<output>1/6_000_000 = around 0</output>

<gadget id="calculator">500 + 500</gadget>
<output>1_000</output>

<gadget id="calculator">15 / (1/6_000_000) / 100_000 / 1_000</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>