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

void counting(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    long long l, r, number, out, howMany=0;
    bool spr;

    cin >> l >> r;

    for(long long i=l; i<=r; ++i){
        number = i;
        spr = true;
        while (number > 0) {
            out = number % 10;

            if(out == 0){
                spr = false;
                break;
            }
            if(i % out != 0){
                spr = false;
                break;
            }
            
            number /= 10;
        }
        if(spr){
            ++howMany;
            //cout << i << " ";
        } 
    }

    cout <<  howMany << '\n';
}

int main(){
    counting();
    return 0;
}