Given the following information about XYZ Company

Calculate the free cash flow in 2020?

	Year 2019	Year 2020
Revenue	3,800	4,500
Cost of sales	-2,000	-2,200
Gross profit	1,800	2,300
Selling expenses	-175	-200
Admin expenses	-365	-440
Depreciation and Amortisation	-660	-700
Profit before Interest and Tax	600	960
Interest expense	-20	-40
Profit before Tax	580	920
Tax expense	-145	-230
Net Income/Profit After Tax	435	690
Capex	400	500
Operating working capital	500	570
Taxation rate	25%	25%