The central square is the first stop of the No. 12 bus and the No. 17 bus. The No. 12 bus departs every 8 minutes, and the No. 17 bus departs every 5 minutes. After the two buses depart at the same time for the first time, how many Can we start again at the same time in minutes?
中心广场是12路公交车和17路公交车的首发站点，12路公交车每8分钟发车一次，17路公交车每5分钟发车一次，这两路公交车在第一次同时发车后，多少分钟后能再次同时发车？
<gadget id="calculator">2 * 2 * 2 * 5</gadget>
<output>40</output>

<result>40</result>