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#include <bits/stdc++.h>

using namespace std;

#define PB push_back
#define SZ(x) int((x).size())
#define REP(i, n) for (int i = 0, _ = (n); i < _; ++i)
#define FOR(i, a, b) for (int i = (a), _ = (b); i <= _; ++i)
#define FORD(i, a, b) for (int i = (a), _ = (b); i >= _; --i)

#ifdef DEBUG
#define DEB(x) (cerr << x)
#else
#define DEB(x)
#endif

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;

const int INF = 1e9 + 9;

bool is_liczba_potyczkowa(int x) {
    for (int left = x; left > 0; left /= 10) {
        int digit = left % 10;
        if (digit == 0) {
            return false;
        }
        if (x % digit != 0) {
            return false;
        }
    }
    return true;
}

void inline one() {
    int left, right;
    cin >> left >> right;

    int result = 0;
    FOR(i, left, right) {
        if (is_liczba_potyczkowa(i)) {
            ++result;
        }
    }
    cout << result << "\n";
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    // int z; cin >> z; while(z--)
    one();
}