Both bus No. 103 and No. 112 depart from the Cultural Palace, No. 103 departs every 6 minutes, and No. 112 departs every 10 minutes. When the two cars start at the same time, how long will it take for the two cars to start at the same time?
103路车和112路车都在文化宫发车，103每隔6分钟发一辆，112每隔10分钟发一辆．当两路车同时发车后，至少再过多少时间又会同时发车？
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<result>30</result>