The third-grade students took four cars to go to the spring outing. The first three cars each took 78 students, and the fourth car took 66 people. How many people went to this spring outing?
三年级的同学乘四辆汽车去春游，前3辆车各坐78个同学，第4辆车坐66人，这次春游一共去了多少人？
<gadget id="calculator">78 * 3</gadget>
<output>234</output>

<gadget id="calculator">234 + 66</gadget>
<output>300</output>

<result>300</result>