C++ Help

Hey guys, I'm new at C++ and I made a porgam can u fix it?

#include <iostream>

int main()
{
    using namespace std;
    cout << 10 / 0
        \n "Hello World!";
    return 0;
}

>>1

#include <iostream>

int main()
{
    using namespace std;
    cout <</* 10 / 0*/\
        /*\n */"Hello World!";
    return 0;
}

fixed.