How to get the 710 million from that last slide?  explain the thought process of the 710 million and its relevance to interest tax shield?

Example: Walmart Jan ($million) Walmart Stores (WMT) 2017 Assume With Debt Zero Debt EBIT 22,764 22,764 Interest Expense 2,367 0 EBT 20,397 22,764 Tax (30%) 6,119 6,829 Net Income 14,278 15,935 Example: Walmart 23 Total Cash Flow With Debt Without Debt Difference Interest Paid to Debtholders 2,367 0 Income available to Equityholders 14,278 15,935 Total Available to all investors 16,645 - 15,935 = 710 Where did the $710m come from?