From A to B, the bus travels for 5 hours, and the truck travels for 4 hours. The speed of the bus is equal to that of the truck.
从甲地到乙地，客车行驶了5小时，货车行驶了4小时，客车速度是货车的多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>