WACC compution using EXCEL formulas only

All data is computed for Amazon.com. I have already researched some of the data, but you still have to do more (all fields highlighted in green) and now cost of debt, cost of equity, and WACC need to be computed (basically, all the fields in orange need to be competed on both tabs), using predefined Excel formulas only. Next, a written answer with explanation of computations is needed. Thank you!