import sys input = sys.stdin.readline T = int(input()) NK = [list(map(int, input().split())) for _ in range(T)] for N, K in NK: K-=1 tmp = list("123456789") idx1 = K//(72*N) U1 = tmp[idx1] tmp.remove(U1) #print(U1, tmp) amari = K%(72*N) tmp = ["0"] + tmp idx2 = amari//(8*N) U2 = tmp[idx2] tmp.remove(U2) #print(U2, tmp) amari2 = amari%(8*N) #print(amari2) mi = 0 for t in tmp: if t