how to calculate the data? 
    if ($row ne 0)
    {
        $number = 0;
        while (($number) = $sth->fetchrow_array())
        {    
            
            $number++; $numbergraf++;

my $newno = substr($number, 0, 2);

$output .=qq~ The sum of xxx is $newno ~;

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How do I get the sum of all the data form $newno? If I write print $newno .... I get the list of number for example 23 34 45 33 .... How do I make the code to do this(23+ 34 +45 +33+ ....) and give me an answer. Thanks

In reply to calculate all the data by Anonymous Monk

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