The school organized 20 students to participate in the "Low Carbon Life Tour" 3-day summer camp (stay 2 days). It costs 1,200 yuan to rent a car, 20 yuan per person per day for accommodation, and 1,400 yuan for food. How much is the average cost per student?
学校组织20名学生参加"低碳生活之旅"3日夏令营活动(住2日)．租用一辆汽车需要1200元，住宿费每人每天20元，伙食费共1400元，平均每名同学的费用是多少元？
<gadget id="calculator">20 * 20 * 2</gadget>
<output>800</output>

<gadget id="calculator">1_200 + 800 + 1_400</gadget>
<output>3_400</output>

<gadget id="calculator">3_400 / 20</gadget>
<output>170</output>

<result>170</result>