Anahi bought a 500-page book to write some notes on. In the first week, she wrote on 150 pages. In the second week, she wrote on 30% of the remaining pages. While continuing writing, she accidentally spilled coffee on the book and damaged 20% of the empty pages she was to write on. Calculate the total number of empty pages available for her to write on now. Let's think step by step and output the final answer within \boxed{}.
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