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


bool check(long long x){
	bool digits[10];
	for (int i = 0; i < 10; ++i)
		digits[i] = false;
	long long tx = x;
	while (tx){
		int d = tx%10;
		digits[d] = true;
		tx /= 10;
	}
	
	if (digits[0])
		return false;

	for (int i = 1; i < 10; ++i){
		if (!digits[i])
			continue;
		if (x % i != 0)
			return false;
	}
	return true;
}

int main(){

	long long l, r;
	scanf("%lld%lld",&l,&r);

	long long cnt = 0;

	for (long long i = l; i <= r; ++i)
		if (check(i))
			cnt++;

	printf("%lld\n",cnt);
}