Mrs. Thompson wants to buy notebooks for her class. She has 20 students, and each student needs at least 2 notebooks. She finds a store that offers a discount: if she buys more than 50 notebooks, she gets a 10% discount on the entire purchase. If each notebook costs $1.50, how much will Mrs. Thompson pay if she decides to buy exactly 60 notebooks? Let's think step by step and output the final answer within \boxed{}.
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