A car travels from A to B at 54 kilometers per hour and arrives in 10 hours. 60 kilometers per hour when returning, how many hours to return?
一辆汽车从甲地开往乙地，每小时行54千米，10小时到达．返回时每小时行60千米，几小时返回？
<gadget id="calculator">10 / 60</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">54 * (1/6)</gadget>
<output>9</output>

<result>9</result>