Yuhong School organized teachers and students in grades one, two, and three to go to the aquarium. They rented a total of 8 cars, each of which can accommodate 50 people, and finally 4 seats were vacant. How many teachers and students go to the aquarium?
育鸿学校组织一、二、三年级师生去海洋馆，一共租了8辆车，每辆车可乘坐50人，最后空4个座位．去海洋馆的师生共多少人？
<gadget id="calculator">50 * 8</gadget>
<output>400</output>

<gadget id="calculator">400 - 4</gadget>
<output>396</output>

<result>396</result>