A bus station sends out No. 5 buses. These No. 5 cars depart every 3, 5, 9, 15, and 10 minutes respectively. After the first departure at the same time, the second bus will be dispatched at the same time every few minutes.
一个公共汽车站，发出五路车，这五路车分别为每隔3、5、9、15、10分钟发一次，第一次同时发车以后，隔多少分钟又同时发第二次车．
<gadget id="calculator">2 * 5 * 3 * 3</gadget>
<output>90</output>

<result>90</result>