In a theme park, a Ferris wheel makes one complete rotation in 12 minutes. There are 8 equally spaced cabins on the Ferris wheel. If a family takes 3 complete rotations on the Ferris wheel and then spends 15 minutes buying snacks, how many more rotations can they make in the remaining 90 minutes of their visit to the theme park? Let's think step by step and output the final answer within \boxed{}.
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