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

long long help[10];

bool potycz(long long x){
    //cout << "jkdsf" << endl;
    long long puf=x;
    while(puf>0){
        int digit=puf%10;
        if(digit==0)return false;
        help[digit]=x;
        if(x%digit!=0)return false;
        puf/=10;
    }
    //cout << x << endl;
    return true;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    long long l,r;
    int result=0;
    cin >> l >> r;
    for(long long i=l;i<=r;i++){
        if(potycz(i)==true)result++;
    }
    cout << result << "\n";

    return 0;
}