MOD = 998244353
M = int(input())
N = input()
L = len(N)


k = [-1] * 10
for s in range(10):
    ok, ng = 0, 1 << 60
    while ng - ok > 1:
        mid = (ok + ng) >> 1
        if 10 * mid + s < M:
            ok = mid
        else:
            ng = mid
    
    k[s] = ok


X = 1
for i in range(L):
    X = (X * (k[(ord(N[i]) - ord('0'))] + 1)) % MOD

pM = [1]
while len(pM) <= L:
    pM.append(pM[-1] * M % MOD)

acc = [(5 * k[i] * (k[i] + 1) + i * (k[i] + 1)) % MOD for i in range(10)]

ans = 0
for i in range(L):
    ans += acc[ord(N[i]) - ord('0')] * pM[L - 1 - i] * X * pow(k[ord(N[i]) - ord('0')] + 1, MOD - 2, MOD)
    ans %= MOD
print(ans)