Matt rode his bike away from the house, he rode a total of 1000 feet.  Along the way, he passed a stop sign that was 350 feet away from his house.  He continued his ride and passed a second sign.  After passing the second sign he road an additional 275 feet.  How many feet are between the first and second signs?
Please reason step by step, and put your final answer within \boxed{}.
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