A Japanese MNC is considering a foreign project $($Project X$)$ in Korea, which has an NPV of KRW $-3$ billion. To promote this investment, the Korean government will provide a $5-$year KRW $10$ billion loan at $0\%$ if it takes Project X$.$ The market interest rate on such a loan is $10\%($an annual rate, and paying interest annually$).$ The required return for Project X is $25\%,$ and the marginal tax rate of the firm in Korea is $20\%.$ What is the combined NPV of the project $($Project X $+$ subsidized loan$)?$