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#include <bits/stdc++.h>

using namespace std;

bool is_potyczkowa(long long n){
    long long  div = 1, copy_num = n;
    while (copy_num > 0){
        div = copy_num % 10;
        copy_num /= 10;
        if (div == 0 || n % div != 0)
            return false;
    }
    return true;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    long long  beg, end, count = 0;
    cin >> beg >> end;
    for (; beg <= end; beg++){
        count  += (long long)(is_potyczkowa(beg));
    }

    cout << count << "\n";
    
    return 0;
}