I am trying to display the total of columns on my table on the last row of my table. I stored these in variables but for some reason they are not displaying.

My table out put shows this:

table output

I tried the below code. It adds that last row that i want onto my table but doesn’t show the variables, i probably concated them wrongly. My code is below:

<?php 
// include database connection file
include('db_config.php');

if(isset($_POST["from_date"], $_POST["to_date"])) {
    $orderData = "";
    $query = "SELECT * FROM college WHERE thedate BETWEEN '".$_POST["from_date"]."' AND '".$_POST["to_date"]."' ORDER BY id_mahasiswa desc";
    $result = mysqli_query($con, $query);

    $orderData .='
    <table class="table table-bordered" id="example">  
    <tr>  
    <th>The_Date_Of_The_Trip</th>  
    <th>AC</th>  
    <th>Block Hours</th>  
    <th>Block Minutes</th>  
    <th>Sectors</th>  
    </tr>';

    if(mysqli_num_rows($result) > 0)
    {
        while($row = mysqli_fetch_array($result))  
        {
            $orderData .='
            <tr>  
            <td>'.$row["thedate"].'</td>  
            <td>'.$row["ac"].'</td>  
            <td>'.$row["flt_hrs"].'</td>  
            <td>'.$row["flt_min"].'</td>  
            <td>'.$row["Sectors"].'</td>  
            </tr>';  
        }
    }
    else  
    {  
        $orderData .= '  
        <tr>  
        <td colspan="5">No Order Found</td>  
        </tr>';  
    }  


$result = mysqli_query($con, "SELECT SUM(Sectors) AS value_sum FROM college"); 

$row = mysqli_fetch_assoc($result); 
$cycless = $row['value_sum'];

$result = mysqli_query($con, "SELECT SUM(flt_hrs) AS value_sum FROM college"); 


$row = mysqli_fetch_assoc($result); 
$totalflt = $row['value_sum'];

$result = mysqli_query($con, "SELECT SUM(flt_min) AS value_sum FROM college"); 
$row = mysqli_fetch_assoc($result); 
$totalfltmin = $row['value_sum'];

$con->close();

    
    $orderData .= '


<tr>
<th>Total</th><th></th><th><p><?php echo $totalflt+(int)($totalfltmin/60); ?></p></th><th><p><?php echo $totalfltmin%60; ?></p></th> <th><p><?php echo $cycless; ?></p></th>
</tr>




    </table>';  
    echo $orderData;  
}






?>