"""

"""

import sys
from sys import stdin

mod = 998244353

M = int(stdin.readline())

A = list(map(int,list(stdin.readline()[:-1])))
A.reverse()


C = [M//10 for i in range(10)]
for i in range(M%10):
    C[i] += 1
Cinv = [ pow(c,mod-2,mod) for c in C ]
Csum = []
for i in range(10):

    fi = 10 if i == 0 else i
    now = (fi+10*(C[i]-1)+fi) * C[i] // 2
    Csum.append(now % mod)

# print (C)

all_cnt = 1
for i in range(len(A)):
    all_cnt *= C[A[i]]
    all_cnt %= mod


ans = 0
base = 1
for i in range(len(A)):

    now = all_cnt * Cinv[A[i]] * Csum[A[i]] * base % mod
    ans += now
    ans %= mod

    base *= M
    base %= mod

print (ans)