In a class room, the teacher is arranging desks neatly before the students arrive. There are 20 desks placed in rows across the room. On each desk, she keeps 4 books and 5 notebooks for the students. She wants to make sure that every desk has the same number of items. Before finishing, she wants to know how many total items she has placed on all the desks. Can you help her to find the total number of items?
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