The capacity of a cylindrical tea barrel is 314 ml. The tea company plans to design a rectangular box that can hold two barrels of tea. What is the minimum volume of this box in ml?
一种圆柱茶叶桶的容量是314毫升，茶叶公司准备设计一种长方体包装盒，这种盒子刚好能装下两桶茶叶，这种盒子的容积至少是多少ml
<result>800</result>