Savannah Number Cruncher

As roommates in university, the two of you have always had a tumultuous relationship revolving around money. He, known as Savannah, is meticulous with every dollar and cent, and his stringent approach to splitting bills has sparked countless debates between you. Today, your argument over his latest meticulous calculation led to a blackout, and when you awoke, you found yourselves trapped in this room. The door was marked with a bold message: 'Settle your scores or stay forever!'