The railway station is the departure station of buses No. 1 and No. 2. Bus No. 1 departs every 10 minutes, and No. 2 buses departs every 15 minutes. After the two buses depart at the same time at 6:30 in the morning , How many times did the trains depart at the same time until 12:30 noon?
火车站是1路和2路公共汽车的始发站，1路车每隔10分钟发一次车，2路车每隔15分钟发一次车，这两路公共汽车在早上6：30同时发车后，到中午12点30分有多少次是同时发车的？
<gadget id="calculator">360 / 30</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>