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#include <iostream>

using namespace std;

bool isPotyczkow(long long x)
{
    long long current = x;
    
    while (current > 0)
    {
        int lastDigit = current % 10;

        if (lastDigit == 0)
        {
            return false;
        }
        else if (x % lastDigit != 0)
        {
            return false;
        }
        else
        {
            current /= 10;
        }
    }
    
    return true;
}

long long potyczkowNumberCountInRange(long long l, long long r)
{
    long long count = 0;
    
    for (long long i = l; i <= r; i++)
    {
        if (isPotyczkow(i))
        {
            count++;
        }
    }

    return count;
}

int main()
{
    long long l, r, count;
    
    cin >> l >> r;

    count = potyczkowNumberCountInRange(l, r);


    cout << count << endl;
}