The following table tracks the main components of working capital over the life of a four-year project. 2016 2018 2019 2020 0 2017 Accounts receivable Inventory Accounts payable 0 174,000 249,000 214,000 87,000 142,000 142,000 107,000 31,000 56,000 62,000 41,000 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. Leave no cells blank be certain to enter "O" wherever required.) 2016 2017 2018 2019 2020 Net working capital Cash flows