A car drives from place A to place B. It departs at 8:00 am and arrives at 3:00 pm. It travels at a speed of 60 kilometers per hour. When it returns, it takes 1 hour less than when it went there. On average, it travels thousands more per hour when it returns. rice?
一辆车从甲地开往乙地，早上8点出发，下午3点到达，去时速度是每小时60千米，返回时比去时少用1小时，返回时平均每小时多行多少千米？
<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<gadget id="calculator">15 - 8 - 1</gadget>
<output>6</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">7 * 10</gadget>
<output>70</output>

<gadget id="calculator">70 - 60</gadget>
<output>10</output>

<result>10</result>