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#include <iostream>

int main(){
    int beg, end, temp, i;
    i = 0;
    std::cin >> beg >> end;

    do{
        if(beg < 10){
            ++i;
            continue;
        }
        temp = beg;
        do{
            if(!(temp % 10) || beg % (temp % 10) != 0)
                break;
        }while(temp /= 10);

        if(!temp)
            ++i;

    }while(beg++ < end);

    std::cout << i << std::endl;

    return 0;
}