The Experimental Primary School organized 393 students from 12 classes to take part in the "Sunshine Youth" social practice activity. Accompanied by the head teachers of each class, the bus was just full of 9 people. How many people can each bus take?
实验小学组织12个班393名学生乘车参加"阳光少年"社会实践活动，各班班主任的陪同，刚好坐满9辆大巴车，每辆大巴车坐到少人？
<gadget id="calculator">393 + 12</gadget>
<output>405</output>

<gadget id="calculator">405 / 9</gadget>
<output>45</output>

<result>45</result>