A car rental company charges a base fee of $50 for the first day and an additional $30 for every day thereafter. If a customer rents a car for 10 days, calculate the total cost of the rental. Additionally, if the customer drives an average of 60 miles per day and the car's fuel efficiency is 25 miles per gallon, how many gallons of fuel will the customer use over the rental period? Let's think step by step and output the final answer within \boxed{}.
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