Codeigniter Pagination Show Number of Results & Page

I am using Codeigniter 3 and have a simple PHP application.

Using the pagination class I would like to display the omegle following at the top of each of my pages;

Showing x to y of z results

Where;

x = start row
y - end row
z = total rows

`Showing 1 to 10 of 5213 results.`
`Showing 11 to 20 of 5213 results.`
`etc`
I am able to retrieve the total rows using the $config['total_rows'] variable. Not sure about the rest though.

My items.php controller looks like this;

    public function index() {
        $config['base_url'] = '/items/index';
        $config['use_page_numbers'] = FALSE;
        $config['reuse_query_string'] = TRUE;
        $config['total_rows'] = $this->db->get('item')->num_rows();
        $config['per_page'] = 10;
        $config['num_links'] = 10;
        $config['full_tag_open'] = '<div><ul class="pagination">';
        $config['full_tag_close'] = '</ul></div><!--pagination-->';
        $config['first_link'] = '&laquo; First';
        $config['first_tag_open'] = '<li class="prev page">';
        $config['first_tag_close'] = '</li>';
        $config['last_link'] = 'Last &raquo;';
        $config['last_tag_open'] = '<li class="next page">';
        $config['last_tag_close'] = '</li>';
        $config['next_link'] = 'Next &rarr;';
        $config['next_tag_open'] = '<li class="next page">';
        $config['next_tag_close'] = '</li>';
        $config['prev_link'] = '&larr; Previous';
        $config['prev_tag_open'] = '<li class="prev page">';
        $config['prev_tag_close'] = '</li>';
        $config['cur_tag_open'] = '<li class="active"><a href="">';
        $config['cur_tag_close'] = '</a></li>';
        $config['num_tag_open'] = '<li class="page">';
        $config['num_tag_close'] = '</li>';
        $config['anchor_class'] = 'follow_link';
        $this->load->library('pagination');
        $this->pagination->initialize($config);

        $data = array(
        'items' => $this->items_model->itemList()
        );

        $this->load->view('item_list', $data);
    }
My URLs are in the following format;

items/index    // displays results 1-10
items/index/10 // displays results 11-20
items/index/20 // displays results 21-30
Any help would developerbook chatrandom be appreciated. Thanks