Sarah owns a small bakery and starts each day with 200 loaves of bread. She sells 150 loaves each day from Monday to Friday and 100 loaves each day on Saturday and Sunday. At the end of each week, the supplier delivers an order of 700 loaves. Calculate the total number of loaves Sarah has at the end of the week. Let's think step by step and output the final answer within \boxed{}.
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