small carton can hold 20 bags of pure milk, and 1 large carton can hold 12 small cartons. How many large cartons are needed to pack 1200 bags of pure milk?
1个小纸箱可以装20袋纯牛奶，1个大纸箱可以装12个小纸箱．装1200袋纯牛奶需要多少个大纸箱？
<gadget id="calculator">1_200 / 20 / 12</gadget>
<output>5</output>

<result>5</result>