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

bool potyczkowa(long long a)
{
    for(long long x = a; x != 0; x /= 10)
    {
        if((x % 10) == 0 || a % (x % 10) != 0)
        {
            return 0;
        }
    }

    return 1;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    long long a, b;

    cin >> a >> b;

    long long l = 0;

    while(a <= b)
    {
        if(potyczkowa(a) == 1)
        {
            l++;
        }

        a++;
    }

    cout << l << endl;

    return 0;
}