The ticket price of Oriental Oasis is 78 yuan. If more people go, it is more cost-effective to buy group tickets. There are 84 students from the fourth and fifth grades, and they paid a total of 5040 yuan for group tickets. How much less can each person pay than before?
东方绿洲的票价是78元，如果去的人多购买团体票比较合算，四五年级共有84人去，购买团体票共付了5040元，每人可比原来少付多少钱？
<gadget id="calculator">5_040 / 84</gadget>
<output>60</output>

<gadget id="calculator">78 - 60</gadget>
<output>18</output>

<result>18</result>