A model of a rectangular garden is made at a scale of 1:50. The model measures 3 feet in length and 2 feet in width. If the garden is to be expanded by adding 10 feet to both the length and width, what will be the new measurements of the garden in inches? After the expansion, what will be the actual area of the garden in square feet? Let's think step by step and output the final answer within \boxed{}.
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