function calc_calories($og, $fg)
{
    $calc = round((6.9 * calc_abw($og, $fg) + 4.0 * (calc_extract($og, $fg) - 0.1)) * $fg * 3.55, 0);
    return $calc;
}
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><strong>FG:</strong></div>
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><?php 
    echo number_format($row_log['brewFG'], 3) . " <span class=\"text-muted small\"><em>" . calc_plato($row_log['brewFG']) . "&deg; P</em></span>";
    ?>
</div>
        </div>
        <?php 
}
?>
        <?php 
if (!empty($row_log['brewOG']) && !empty($row_log['brewFG'])) {
    ?>
        <div class="row">
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><strong>Real Extract:</strong></div>
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><?php 
    echo calc_extract($row_log['brewOG'], $row_log['brewFG']) . "&deg; P";
    ?>
</div>
        </div>
        <div class="row">
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><strong>Attenuation:</strong></div>
            <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6"><?php 
    echo calc_app_atten($row_log['brewOG'], $row_log['brewFG']) . "% <span class=\"text-muted small\"><em>Apparent</em></span> &ndash; " . calc_real_atten($row_log['brewOG'], $row_log['brewFG']) . "% <span class=\"text-muted small\"><em>Real</em></span>";
    ?>
</div>
        </div>
        <?php 
}
?>
    </div><!-- /column 1 -->