Shengli Road Primary School organized "Excellent Young Pioneers" 36 people to go to Fuzhou People's Park to play. The notice at the entrance of the park reads: "One person, one ticket, enter the park with the ticket; children's individual tickets are 8 yuan each, and group tickets with more than 40 tickets enjoy a 20% discount." Please be my advisor, how to buy tickets for Shengli Road Primary School is the most cost-effective? How much money can I save?
胜利路小学组织"优秀少先队员"36人去抚州市人民公园游玩．公园门口的通告写道："一人一票，凭票入园；儿童个人票每张8元，团体票40张以上享受8折优惠．"请你做参谋，胜利路小学怎样购票最合算？可省多少钱？
<gadget id="calculator">36 * 8</gadget>
<output>288</output>

<gadget id="calculator">8 * 0.8 * 40</gadget>
<output>256</output>

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

<result>32</result>