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

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef pair<ll, int> PILL;
typedef pair<ll, ll> PLL;

const int MAX_N = 2e5+5;
const int M = 3e4+5;
const ll INF = (ll)(1e18);
const int inf = 2e9;
const ll MOD = 1000000007LL;

bool isGood(ll x) {
	ll tmp = x;
	while (tmp != 0) {
		ll d = tmp % 10;
		tmp /= 10;
		if (d == 0) return false;
		if (x%d != 0) return false;
	}
	return true;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
	
	ll l, r;
	cin >> l >> r;
	int ans = 0;
	
	for (ll i = l; i <= r; i++) {
		ans += isGood(i);
	}
	
	cout << ans << '\n';
	
    return 0;
}