Wordpress Offset

gistfile1.phtml

<?php get_header(); ?>

 <?php
  $number_of_feature_posts = 1;
  $number_of_secondary_posts = 8;
  $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
  $how_many_secondary_posts_past = ($number_of_secondary_posts * ($paged - 1));
  $off = $number_of_feature_posts + (($paged > 1) ? $how_many_secondary_posts_past : 0);
?>

<div class="row main-content post-content">
  <div class="small-16 medium-16 large-18 small-centered columns">
    <div class="latest">

      <?php
        $args = array(
          'posts_per_page' => $number_of_feature_posts,
          'tax_query' => array(
            array(
              'taxonomy' => 'post_format',
              'field' => 'slug',
              'terms' => array('post-format-quote'),
              'operator' => 'NOT IN'
            )
          ),
        );

        $loop = new WP_Query( $args );

        while ( $loop->have_posts() ) : $loop->the_post();

	if (false == get_post_format()) { ?>
          <h1 class="text-center post-title"><a href="<? the_permalink(); ?>"><?php the_title(); ?></a></h1>

	  <div class="post-meta text-center">
	    <p class="author">By <a href="<?php echo get_author_posts_url( get_the_author_meta( 'ID' ) ); ?>"><?php the_author_meta('display_name'); ?></a></p>
          </div>

          <?php if ( has_post_thumbnail() ) : ?>
            <div class="featured-image">
              <?php the_post_thumbnail(); ?>
            </div>
          <?php endif; ?>

	  <?php the_excerpt(); ?>
	    <p><a href="<?php the_permalink(); ?>">Continue reading <span class="meta-nav">&rarr;</span></a></p>
						
	<?php } else {
	  get_template_part( 'content', get_post_format() );
	}
	endwhile;
	wp_reset_query();
      ?>
    </div>

    <div class="row">
      <div class="small-18 medium-11 small-centered medium-uncentered columns">

        <div class="post-listing">
	  <?php

    	    $args = array(
              'posts_per_page' => $number_of_secondary_posts,
              'offset' => $off,
              'showposts' => $number_of_secondary_posts
            );

            $loop = new WP_Query( $args );

    	    while ( $loop->have_posts() ) : $loop->the_post(); ?>
	      <?php get_template_part( 'content', get_post_format() ); ?>
	    <?php endwhile; wp_reset_query();
          ?>
        </div>

        <div class="navigation">
          <div class="left"><?php next_posts_link('&larr; Older Entries') ?></div>
          <div class="right"><?php previous_posts_link('Newer Entries &rarr;') ?></div>
        </div>
      </div>

      <div class="small-18 medium-5 columns medium-offset-2 small-centered medium-uncentered">
      	<?php get_sidebar(); ?>
      </div>
    </div>
  </div>
</div>

<?php get_footer(); ?>