A team of workers needs to paint a circular mural on a wall. The diameter of the mural is 10 meters. If the team can paint at a rate of 5 square meters per hour, how many hours will it take to paint the entire mural? Additionally, if the team wants to divide the work evenly over 4 days, how many hours per day should they work? Let's think step by step and output the final answer within \boxed{}.
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