The minibus at the bus station departs every 4 minutes, and the bus departs every 6 minutes. After the two buses depart at the same time for the first time, how long will it take at least to depart at the same time again?
公交车站的小巴每4分钟发一次车，大巴每6分钟发一次车，这两种车第一次同时发车后，至少还要多长时间再次同时发车？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>