A bicycle travels a total of 72 kilometers from 8 o'clock to 14 o'clock, how many kilometers per hour on average?
一辆自行车从8时出发到14时共行了72千米，平均每小时行多少千米？
<gadget id="calculator">14 - 8</gadget>
<output>6</output>

<gadget id="calculator">72 / 6</gadget>
<output>12</output>

<result>12</result>