Where can I find my $cfg['instdir']?

I'm trying to install a script on 000webhosting and it keep asking for my $cfg['instdir']

I have tried a lot of different thing, but nothing work, Can anyone place Help????

Heres what its asking for,

// Config vars - absolutely needed before anything really happens.

///////////////////////////////////

// The local path on your server of ArcadeBuilder, INCLUDING THE TRAILING SLASH.
// This should be something like /home/yourdir/public_html/ or C:/Domains/YourDomain.com/
$cfg['instdir'] = 'What Goes Here???';

// The Internet URL of ArcadeBuilder, INCLUDING THE TRAILING SLASH.
// This should be something like http://www.example.com/
$cfg['baseurl'] = 'What Goes Here???';

Thanks So Much For Your Help.