There are 28 boxes of milk in one carton. Xiaofang and her elder brother ate them all in a week. How many boxes do the two brothers and sisters eat per day on average?
一箱牛奶共28盒，小芳和哥哥一星期就吃光了，兄妹俩平均每人每天吃多少盒？
<gadget id="calculator">28 / 7 / 2</gadget>
<output>2</output>

<result>2</result>