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#include <iostream>
using namespace std;


bool czy_pat(long long int x)
{
	long long int n = x;
	long long int r;
	while (x != 0)
	{
		r = x % 10;
		if (r == 0) return false;
		x = x / 10;
		if (n % r != 0) return false;
	}
	return true;
}

int main()
{

	long long int l, r;
	cin >> l >> r;
	long long int wyn = 0;
	for (long long int i = l;i <= r;i++)
	{
		if (czy_pat(i) == 1) wyn++;
	}
	cout << wyn;
}