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#include <iostream>
#include <string>

using namespace std;

bool t(size_t l)
{
	string temp = to_string(l);
	for(size_t i=0;i<temp.size();i++)
	{
		int c = temp[i] - '0';
		if(c == 0 || l % c != 0) return false;
	}
	return true;
}

int main()
{
	size_t l, r;
	cin >> l >> r;
	size_t counter=0;
	for(size_t i = l;i<=r;i++)
		if(t(i)) counter++;
	cout << counter;
	return 0;
}