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#include<bits/stdc++.h>
using namespace std;
bool f(long long n){
  long long a = n;
  while(a > 0){
    if(a % 10 == 0) return 0;
    if(n % (a % 10) != 0) return 0;
    a /= 10;
  }
  return 1;
}
int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  long long l, r, s = 0;
  cin >> l >> r;
  while(l <= r) s += f(l++);
  cout << s;
}