A car departs from A at 10:00 am and arrives at B at 2:00 pm. It travels a total of 256 kilometers. How many kilometers does it travel per hour on average?
一辆汽车上午10时从甲地出发，下午2时到达乙地，共行了256千米，平均每小时行多少千米？
<gadget id="calculator">14 - 10</gadget>
<output>4</output>

<gadget id="calculator">256 / 4</gadget>
<output>64</output>

<result>64</result>