A bus station starts at 6:00 am and stops at 9:00 pm. If there is one bus every 10 minutes, how many buses are there in one day?
一个公共汽车站，从早上6时开始发车到晚上9时停止发车，如果每10分钟发一辆车，一天一共发多少辆车？
<gadget id="calculator">900 / 10</gadget>
<output>90</output>

<gadget id="calculator">90 + 1</gadget>
<output>91</output>

<result>91</result>