#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b)   for (int i = a; i < (b); ++i)
#define lrep(i, a, b)  for (ll i = a; i < (b); ++i)
#define all(x)         (x).begin(), (x).end()
#define sz(x)          (int)(x).size()
#define ia(n)          std::array<int, n>
#define lla(n)         std::array<ll, n>

using vi =             std::vector<int>;
using pii =            std::pair<int, int>;
using ll =             long long;
using vll =            std::vector<ll>;
using pll =            std::pair<ll, ll>;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ll word = 0;
    ll power = 10;
    ll count = 0;
    ll n;
    ll k;
    cin >> n >> k;
    lrep (i, 1, n) {
        if (i == power) {
            power *= 10;
        }
        word = ((word * power) + i) % k;
        if (word == 0) {
            ++count;
        }
    }
    cout << count << '\n';

    return 0;
}