A bus departs from Suzhou at 11:00 noon and arrives in Wuxi at 13:00. The total distance from Suzhou to Wuxi is 84 kilometers. How many kilometers per hour does this car travel on average?
一辆公共汽车中午11：00从苏州出发，13：00到达无锡．苏州到无锡一共84千米，这辆车平均每小时行多少千米？
<gadget id="calculator">84 / 2</gadget>
<output>42</output>

<result>42</result>