Changting West Bus Station is the starting point of buses No. 1 and No. 2. Bus No. 1 departs every 5 minutes, and Bus No. 2 departs every 8 minutes. After the two cars depart at the same time, at least how many minutes later they depart at the same time.
长汀汽车西客站是1路和2路汽车的起点站．1路汽车每5分钟发车一次，2路汽车每8分钟发车一次．这两路汽车同时发车以后，至少再经过多少分钟又同时发车．
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>