The following table tracks the main components of working capital over the life of a four-year project. 2019 2023 Accounts receivable Inventory Accounts payable 84,000 29,500 2020 2021 168,000 243,600 139,000 139,000 54,500 59,000 2022 208,000 104,000 39,500 @ Calculate net working capital and the cash inflows and outflows due to investment in working capital. (Negative answers should be indicated by a minus sign.) 2019 2020 2021 2022 2023 Net working capital Cash flows