The whole class of 36 people went to "Wonderland Park" to play. The "Ticket Purchase Instructions" at the entrance of the park wrote: Enter the park with a ticket, each student ticket is 8 yuan, and you can enjoy group (1/5) discounts starting from 40 tickets, which counts as one. Count, how to buy tickets cost-effective? How much less can you pay when you get a good deal?
全班36人去"仙境公园"游玩，公园门口的"购票须知"写道：凭票入园，学生票每张8元，40张开始可以享受团体(1/5)的优惠，算一算，怎样购买门票合算？合算时可以少付多少钱？
<gadget id="calculator">36 * 8</gadget>
<output>288</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 * 8 * (4/5)</gadget>
<output>256</output>

<gadget id="calculator">288 - 256</gadget>
<output>32</output>

<result>32</result>