The first bus from Qujing to Kunming leaves at 6:30 every day, then every 2 hours, and the last bus leaves at 6:30 in the evening. How many shifts are there every day?
从曲靖开往昆明的客车，每天最早一班是6：30开出，然后每隔2小时发出一班，最晚一班晚上6：30开出．每天共有几个班次？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>