VTMO 2026 - Grade 7 - Semifinal - SET 6 - Self-study Question 6

Use each of the digits 2, 3, 4, 5, 6, 7, 8 exactly once as the distinct digits $U,V,W,X,Y,M,N$. What is the smallest possible value of $\overline{UVW}-(\overline{XY}+\overline{MN})$?