4 students went to visit the art exhibition, tickets were 30 yuan per person, and the round-trip transportation cost was 16 yuan in total. How much did each person spend on average?
4位同学去参观画展，门票每人30元，来回交通费一共花了16元．平均每人这次花了多少元？
<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">4 + 30</gadget>
<output>34</output>

<result>34</result>