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#include <stdio.h>
#include <vector>
#include <map>
#include <unordered_set>
#include <queue>
#include <unordered_map>
#include <math.h>
#include <limits.h>
#include <algorithm>
#include <functional>
#include <iterator>
#include <algorithm>
#include <string>
#include <iostream>

using namespace std;

#define pb push_back
#define mp make_pair

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

bool potyczkowa(ll num) {
  ll x = num;
  while (x > 0) {
    ll digit = x % 10;
    x /= 10;
    if (digit == 0 || num % digit != 0) return false;
  }
  return true;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(NULL);

  ll l, r;

  cin >> l >> r;

  ll count = 0;
  for (ll i=l; i<=r; ++i) {
    if (potyczkowa(i)) count++;
  }

  cout << count << endl;

  return 0;
}