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#include <bits/stdc++.h>

using namespace std;

long long l, r;


bool is_potyczkowa(long long x) {
    long long tmp = x;
    while(tmp > 0) {
        int n = tmp % 10;
        if (n == 0 || x % n != 0)
            return false;
        tmp /= 10;
    }
    return true;
}

long solve() {
    long long res = 0;
    for(long long i = l; i <= r; ++i) {
        if(is_potyczkowa(i))
            res++;
    }

    return res;
}

int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    cin >> l >> r;
    cout << solve() << endl;
    return 0;
}