#include <iostream>
#include <vector>
#include <cstring>
using namespace std;
typedef long long ll;
const int maxn = 200005;
const ll MOD = 1e9 + 7;
int n;
string s;

ll dp[maxn][8];
ll rec(int at, int remainder) {
if(at == n and remainder == 0) {
return 1;
}
if(at == n) {
return 0;
}

if(dp[at][remainder] != -1) {
return dp[at][remainder];
}
ll res = 0;
res += rec(at + 1, remainder);
res %= MOD;
int new_remainder = (remainder * 10 + (s[at] - '0')) % 8;


res += rec(at + 1, new_remainder);
res %= MOD;
dp[at][remainder] = res;
return res;
}
int main() {
ios_base::sync_with_stdio(false);
cin >> n >> s;
memset(dp, -1, sizeof dp);

cout << rec(0, 0) - 1 << endl;
return 0;
}