Display Results in Rows

I’m currently dislpaying a list of subscribers to my blog. The results are displayed vertically in a column like displayed below. I would like to display the results horizontally in a row, with 4 results per row. I need help with the code for the looping and formatting. The code I’m using now is below:

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<?php

// Get the authors from the database ordered by user nicename
global $wpdb;
$query = “SELECT ID, user_nicename from $wpdb->users ORDER BY user_nicename”;
$author_ids = $wpdb->get_results($query);

// Loop through each author
foreach($author_ids as $author) :

// Get user data
$curauth = get_userdata($author->ID);

// If user level is above 0 or login name is “admin”, display profile
if($curauth->user_level == 0) :

// Get link to author page
$user_link = get_author_posts_url($curauth->ID);

// Set default avatar (values = default, wavatar, identicon, monsterid)
$avatar = ‘wavatar’;
?>

<div class=”post”>

” title=”<?php echo $curauth->display_name; ?>”>
<?php echo get_avatar($curauth->user_email, ’96’, $avatar); ?>

<h3 class=”post-title”>
” title=”<?php echo $curauth->display_name; ?>”><?php echo $curauth->display_name; ?>
</h3>

<p>
<?php echo $curauth->description; ?>
</p>

</div>

<?php endif; ?>

<?php endforeach; ?>

Thanks in Advance!