Can someone help me with this question and provide a step by step solution with a detailed explantaion (ive an exam coming up and i dont understand it)

Q4. Axis Ltd. have generated sales of 25 million. Costs incurred in generating sales, excluding depreciation, are 13m and depreciation expenses amounted to 3m. Interest on debt came to 0.6m. The tax rate is 20%. Axis Ltd (,000) 2008 2007 Plant & Machinery 2,770 1,888 Stock 860 800 Debtors 810 530 Cash 6 67 Creditors (133) (50) Calculate the company's operating cash flow and free cash flow