A car leaves A at 8:30 and arrives at B at 15:30. The road between A and B is 406 meters long. How many miles per hour does the car travel on average?
一辆汽车8：30从甲地开出，15：30到达乙地，甲乙两地公路长406米．这辆汽车平均每小时行多少千米？
<gadget id="calculator">406 / 7</gadget>
<output>58</output>

<result>58</result>