A small supermarket sells a total of 21 boxes of beverages in a week, with 24 bottles in each box. How many bottles are sold per day on average?
一个小超市一星期共卖出饮料21箱，每箱24瓶，平均每天卖出多少瓶？
<gadget id="calculator">24 / 7</gadget>
<output>24/7 = around 3.428571</output>

<gadget id="calculator">21 * (24/7)</gadget>
<output>72</output>

<result>72</result>