After the bus arrives at the station, 6 people get off, there are 7 people left on the bus, and 5 people get on again, how many people are on the bus now?
公共汽车到站后下来6人，车上还剩7人，又上来5人，现在车上有多少人？
<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<result>12</result>