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#include<cstdio>

bool isPotyczkow(long long int a) {
	long long int temp = a;
	while (temp != 0) {
		//printf("temp = %lld\n", temp);
		if (temp % 10 == 0 || a % (temp % 10) != 0) {
			return false;
		}
		temp /= 10;
	}
	return true;
}

int main() {
	long long int l, r;
	(void)! scanf("%lld %lld", &l, &r);
	long long result = 0;
	for(long long int i = l; i <= r; i++) {
		//printf("x %lld\n", i);
		if (isPotyczkow(i)){
		//	printf("True\n");
			result++;
		}
	}
	printf("%lld\n", result);

	return 0;
}