using System;

namespace _05._Good_numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] numbers = Console.ReadLine()
                .Split();

            int firstNumber = int.Parse(numbers[0]);
            int secondNumber = int.Parse(numbers[1]);

            Console.WriteLine(CountNumbers(firstNumber,secondNumber));

        }
        static int CountNumbers(int startNum, int endNum)
        {
            int counterNumbers = 0;
            int counter = 0;

            for (int i = startNum; i <= endNum; i++)
            {
                counter = 0;
                int currentNumber = i;

                string currentNumberAsString = currentNumber.ToString();

                for (int j = 0; j < currentNumberAsString.Length; j++)
                {
                    int currentDigit = (currentNumberAsString[j]) - 48;
                    if (currentDigit == 0)
                    {
                        counter++;
                        continue;
                    }
                    if (currentNumber % currentDigit == 0)
                    {
                        counter++;
                    }
                    else
                    {
                        break;
                    }
                }
                if (counter == currentNumberAsString.Length)
                {
                    counterNumbers++;
                    continue;
                }
            }
            return counterNumbers;
        }
    }
}