mod = 10** 9 + 7

def main():

    p, k = map(int, input().split())
    if k == 0:
        ans = 1+(10**(p-1))//p
        print(ans%mod)
    else:
        ans = (10**(p-1)-k-1)//p+1
        print(ans%mod)


if __name__ == "__main__":
    main()