The store in the children's park is open for business, 3 bottles of drinks for 6 yuan, buy 5 bottles and get 1 bottle free. There are currently 36 students, if each person buys 1 bottle, how much will it cost at least?
儿童公园里的商店开张营业，饮料6元3瓶，买5瓶送l瓶．现有36名学生，如果每人买1瓶，至少要花多少元？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">6 * 5 * 2</gadget>
<output>60</output>

<result>60</result>