passenger car and a truck leave oppositely from two stations A and B at the same time, and the two cars meet on the way 4 hours later. The bus travels the entire distance in 9 hours, and the truck travels 40 kilometers per hour. How many miles is the distance between A and B?
一辆客车和一辆卡车同时从甲乙两站相对开出，4小时后两车在途中相遇．客车行全部路程用9小时，卡车每小时行40千米．问甲、乙两站相距多少千米？
<gadget id="calculator">9 - 4</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 * (4/5)</gadget>
<output>32</output>

<gadget id="calculator">32 + 40</gadget>
<output>72</output>

<gadget id="calculator">4 * 72</gadget>
<output>288</output>

<result>288</result>