Please show all the work last person i had solve this i think did it wrong. $($btw im solving this with a calculator$)$

Capital Budgeting

CFO CO$1$ CO$2$ CO$3$ CO$4$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$-$$$15,000$ $$3,000$ $$5,000$ $$6,000$ $$8,000$

Interest Rate $11\%$

Compute NPV$?$

Compute IRR?