Inventory Hours - Simple Calculation with PHP

{exp:channel:entries site="siteorders" channel="customer_complete" show_future_entries="yes" dynamic="off" disable="categories|trackbacks|pagination|category_fields" rdf="off" status="open"}
{if "{count}" == "1"}
    {if total_results == "1"}
        <?php $total_projects = "1" ; ?>
    {if:else}
        <?php $total_projects = "{total_results}" ; ?>
    {/if}
{/if}
{/exp:channel:entries}

<?php $work_days = ($total_projects * 2); ?>
<?php $delivery_days = ($work_days + 1); ?>

<?php 
    $start_day = 
        $this->EE->localize->decode_date('%l
 %F %j, %Y', 
            $this->EE->localize->now +  ((86400 * $work_days) + 86400)); 
?>

Orders finalized today

    will be delivered no later than

    <?php echo $start_day; ?>.