215 teachers and students in the fourth grade of Mingju Primary School went to the spring outing, 35 of them took minibuses, and the rest took 4 buses. How many people did each bus take on average?
茗居小学四年级师生215人去春游，其中35人乘坐中巴车，其余的人乘坐4辆大客车，平均每辆大客车坐多少人？
<gadget id="calculator">215 - 35</gadget>
<output>180</output>

<gadget id="calculator">180 / 4</gadget>
<output>45</output>

<result>45</result>