The following table tracks the main components of working capital over the life of a four$-$year project.

$\backslash$table$[[,2021,2022,2023,2024,2025],[$Accounts receivable,$0,158,000,233,000,198,000,0],[$Inventory$,79,000,134,000,134,000,99,000,0],[$Accounts payable,$27,000,52,000,54,000,37,000,0]]$

Calculate net working capital and the cash inflows and outflows due to investment in working capital.

Note: Negative answers should be indicated by a minus sign.

$\backslash$table$[[,2021,2022,2023,2024,2025],[$Net working capital,,,,,$],[$Cash flows,,,,,$]]$