On a map with a scale of 1:500,000, the distance from Anxi to Xiamen is measured to be 17cm. At 8:30 am, a small car drove from Anxi to Xiamen and arrived at 9:55 am. The small car travels on average every hour. How many kilometers.
在一幅比例尺为1：500000的地图上，量得安溪到厦门的距离为17cm，上午8时30分有一辆小车从安溪开往厦门，上午9时55分到达，小辆小车平均每小时行多少千米．
<gadget id="calculator">1 / 500_000</gadget>
<output>1/500_000 = around 0.000002</output>

<gadget id="calculator">17 / (1/500_000) / 100_000 / 60</gadget>
<output>17/12 = around 1.416667</output>

<gadget id="calculator">17 / (1/500_000) / 100_000 / (17/12)</gadget>
<output>60</output>

<result>60</result>