The ticket price of the forest park is 68 yuan each. If there are many people going, it is more cost-effective to buy a group ticket. There are 72 people in the first grade to visit, and the group ticket costs 3600 yuan. How much cheaper can each person be?
森林公园门票价格是每张68元，如果去的人多，购买团体票比较合算，一年级有72人去游览，购买团体票共付3600元，每人可以便宜多少元？
<gadget id="calculator">3_600 / 72</gadget>
<output>50</output>

<gadget id="calculator">68 - 50</gadget>
<output>18</output>

<result>18</result>