mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    p, k = map(int, input().split())
    ans = ((pow(10, p-1, mod) - 1) * pow(p, mod-2, mod))%mod
    if k:
        print(ans)
    else:
        print((ans+1)%mod)


if __name__ == '__main__':
    main()