A bus station has three lines leading to different places. The first line departs every 5 minutes, the second line departs every 6 minutes, and the third line departs every 10 minutes. After the three lines depart at the same time, how many minutes later will they depart at the same time?
某公共汽车站有三条线路通往不同的地方．第一条线路，每隔5分钟发车一次，第二条线路每隔6分钟发车一次，第三条线路每隔10分钟发车一次．三条线路同一时间发车后，再过多少分钟又同时发车？
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<result>30</result>