Alex has to attend a series of meetings spread over several days. Each meeting lasts 45 minutes. If Alex has 12 meetings to attend, how many total hours will Alex spend in these meetings? Additionally, if there are 3 different possible time slots each day and Alex can attend only one meeting per time slot, how many days will it take for Alex to complete all the meetings? Let's think step by step and output the final answer within \boxed{}.
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