A passenger car travels 91 kilometers per hour. How many hours does it travel from 10 am to 3 pm?
一辆客车每小时行驶91千米，它从上午10时行驶到下午3时，一共行驶了多少小时？
<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<result>5</result>