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#include <iostream>

bool isPotyczkovNumber(const long long& number)
{
    long long copy = number;
    while (copy > 0) {
        if ((copy % 10) == 0 || (number % (copy % 10)) != 0)
            return false;
        copy /= 10;
    }
    return true;
}

void potyczkov()
{
    long long l = 1;
    long long r = 1;
    long sum = 0;

    std::cin >> l;
    std::cin >> r;

    for (long long i = l; i < r; i++)
    {
        if (isPotyczkovNumber(i))
            sum++;
    }
    std::cout << sum;
}

int main()
{
    potyczkov();
	return 0;
}