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#include <iostream>
using namespace std;
long long w,a,b;
bool test (long long a)
{
    long long e=a;
    while(e)
    {
        long long d=e%10;
        if(d==0) return false;
        if(a%d) return false;
        e/=10;
    }
    return true;
}
int main()
{std::ios_base::sync_with_stdio(0);
 cin>>a>>b;
 for(int i=a; i<=b; i++)
 {
   if(test(i)) w++;
 }
 cout<<w;
 return 0;
}