MOD = 10**9 + 7

p, k = map(int, input().split())

if k == 0:
    numerator = (pow(10, p-1, MOD) + p - 1) % MOD
else:
    numerator = (pow(10, p-1, MOD) - 1) % MOD

ans = numerator * pow(p, MOD-2, MOD) % MOD
print(ans)