Question $4(1\mathrm{.}5$ points$)$ Retake question

$\backslash$table$[[$Year$,2019,2020],[$Net sales,$10000,14500],[$Costs of goods,$5000,7900],[$Depreciation$,1000,600],[$Taxes paid,$1000,500],[$Cash$,10400,10100],[$A$$counts receivable,$1600,2400],[$Inventory$,1500,1300],[$Current liabilities,$5400,7200],[$Net fixed assets,$8500,5000]]$

Please calculate the free cash flow in $2020($keep zero decimal places$).$

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