John runs a small bookstore and keeps track of his inventory carefully. He started the month with 150 books. During the month, he received 30 new books, sold 45 books, and found that 5 books were damaged and had to be discarded. At the end of the month, he discovered 2 books that had been misplaced earlier. How many books does John have at the end of the month? Let's think step by step and output the final answer within \boxed{}.
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