Dad bought 20 cans of Coca-Cola for Beibei from the canteen downstairs, and the canteen stipulated: "You can exchange 5 cans of Coca-Cola for 1 can of Coke." Children, think about it, how many cans of Coca-Cola can Beibei drink at most?
爸爸从楼下的小卖部给贝贝买了20罐可口可乐，小卖部规定："用5个可口可乐罐可换1罐可乐．"小朋友，想一想，贝贝最多能喝到多少罐可口可乐？
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">20 + 4 + 1</gadget>
<output>25</output>

<result>25</result>