There are 6 bottles of beverages in a box, and the cost of buying 3 boxes is 72 yuan. Find the average price of each bottle of beverages. What is the correct formula?
一箱饮料有6瓶，买了3箱共用72元，求平均每瓶饮料多少钱，列式正确的是多少
<gadget id="calculator">72 / 3 / 6</gadget>
<output>4</output>

<result>4</result>