The teacher leads the students to travel to Hainan in the summer vacation. Adults need 780 yuan, and children need 485 yuan. There are two teachers and seven students. How much does it cost?
暑假老师带领学生去海南旅游，成人每人需要780元，儿童每人485元，一共有两名老师，七名学生，需要多少钱？
<gadget id="calculator">780 * 2</gadget>
<output>1_560</output>

<gadget id="calculator">485 * 7</gadget>
<output>3_395</output>

<gadget id="calculator">1_560 + 3_395</gadget>
<output>4_955</output>

<result>4_955</result>