The distance from Yiwu to Shanghai is 360 kilometers. A high-speed bus departs from Yiwu West Bus Station at 11 am and arrives in Shanghai at 3 pm. How many kilometers per hour does the high-speed bus travel on average?
义乌到上海的路程为360千米，一辆高速大巴上午11时从义乌汽车西站开出，下午3时到达上海，这辆高速大巴平均每时行多少千米？
<gadget id="calculator">15 - 11</gadget>
<output>4</output>

<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<result>90</result>