Jonathan eats 2500 calories every day except for Saturday, when he consumes an extra 1000 calories. He burns 3000 calories every day. What is his weekly caloric deficit? Think carefully first, then make a decision:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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He consumes 2500 + 1000 = 3500 calories on Saturday. He consumes 2500 * 6 + 3500 = 18500 calories in the week. He burns 3000 * 7 = 21000 calories in the week. His caloric deficit is 21000 - 18500 = 2500 calories per week. So, the answer is 2500.