Show work please! These questions go together so not really 2 different ones

Using the following expected interest payments, cost of debt =5%, and tax-rate =21%, discount the year 4 expected payment back to time 0 (today). Expected interest year 1=50; year 2=35; year 3=20; year 4=10;5=0 9.316.5013.6510.11 Question 19 3 pts Using the following expected interest payments, cost of debt =5%, and tax-rate =21%, calculate the TAX SHIELD. Expected interest year 1=50; year 2=35; year 3=20; year 4=10;5=0 101.36 46.37 82.85 158.33