A passenger car traveled a total of 455 kilometers from 10:00 am to 3:00 pm that day. How many miles per hour does the car travel on average?
一辆客车上午10时到当天下午3时，一共行驶了455千米．这辆车平均每小时行驶多少千米？
<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<gadget id="calculator">455 / 5</gadget>
<output>91</output>

<result>91</result>