11. Selected information for Blake's Restaurant Supply follows. ($ millions) 2020 2021 Net sales 694 782 Cost of goods sold 450 502 Depreciation 51 61 Net income 130 142 Finished goods inventory 39 29 Accounts receivable 57 87 Accounts payable 39 44 Net fixed assets 404 482 Year-end cash balance 86 135 a. During 2021, how much cash did Blake's collect from sales? b. During 2021, what was the cost of goods produced by the company?