Rebecca is organizing a charity event and needs to arrange square tables for the guests. Each table can seat 4 people. She expects 64 guests to attend the event. However, she realizes that due to some last-minute cancellations, 8 guests will not be able to attend. If she arranges all the guests evenly at the tables, how many tables will she need and how many people will sit at each table? Let's think step by step and output the final answer within \boxed{}.
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