Year 2019 2020 Net sales 10000 18200 Costs of goods 5000 8800 Depreciation 1000 500 Taxes paid 1000 700 Cash 10800 10700 Accounts receivable 2300 1800 Inventory 800 1400 Current liabilities 5600 7500 Net fixed assets 9200 6000 Please calculate the free cash flow in 2020 (keep zero decimal places).