Please help me to solve this question.

Amazon is a company listed on the NASDAQ. For the 52 weeks ending 28 July 2023, this company had a positive net cash flow from operating activities of $109,201,000. For the same period, Walmart showed a loss before interest and tax of $485,783,000. Could you please explain in detail why there is such a large difference between these two amounts. Use specific dollar amounts to illustrate your answer. Not less than 500-600 words.