### Net Operating Income/Residual/ Find K

I already have the answer (k*=25.91%) to this problem from my text book but I need to know step by step how they got to the answer. All that is provided in the example is: Price = NOI1/(1+K*)^1 + NOI2/(1+K*)2........+ (NOI5 + Residual)/(1+k*)^5 where K* = expected before-tax return on an unlevered investment NOI= Net Oper