Fourth and fifth grade students go on a trip. There are 389 students in the fourth grade and 403 students in the fifth grade. They take a bus with a capacity of 36 people. How many such buses are needed?
四、五年级的学生去旅游．四年级有389人，五年级有403人，他们乘坐定员36人的大客车，需要多少辆这样的车？
<gadget id="calculator">389 + 403</gadget>
<output>792</output>

<gadget id="calculator">792 / 36</gadget>
<output>22</output>

<result>22</result>