Sam is planning a road trip. His car consumes fuel at a rate of 25 miles per gallon. He plans to travel a distance of 500 miles. If the cost of fuel is $3.50 per gallon, how much will Sam spend on fuel for the entire trip? Additionally, if Sam plans to take breaks every 100 miles and spends $5 on snacks during each break, what will be his total expenditure for the trip? Let's think step by step and output the final answer within \boxed{}.
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