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It is week 1 and there are currently 99 Apple Watches Series 6 in stock. We need 478 Apple Watches at the start of week 6. If there are scheduled receipts planned for week 3 of 91 Apple Watches and Apple Watch has a lead time of 1 week, in which week should an order be placed to meet the requirement of Apple Watches? Input should be an exact number (for example, 5 or 10), It is week 1 and there are currently 57 Apple Watches Series 6 in stock. We need 437 Apple Watches at the start of week 7. If there are scheduled receipts planned for week 3 of 74 Apple Watches and week 4 of 96 Apple Watches and Apple Watch has a lead time of 3 week, how much of an order should be placed to meet the requirement of Apple Watches? Input should be an exact number (for example, 5 or 10). It is week 1 and there are currently 63 Apple Watches Series 6 in stock. We need 461 Apple Watches at the start of week 7. If there are scheduled receipts planned for week 3 of 72 Apple Watches and week 4 of 72 Apple Watches and Apple Watch has a lead time of 2 week, in which week should an order be placed to meet the requirement of Apple Watches? Input should be an exact number (for example, 5 or 10)