$vpg1 = $row_average['one'];
if($vpg1 != 0){
$nv1 = $vpg1/1;}

$vpg2 = $row_average['two'];
if($vpg2 != 0){
$nv2 = $vpg1/2;}

$vpg3 = $row_average['three'];
if($vpg3 != 0){
$nv3 = $vpg1/3;}

$vpg4 = $row_average['four'];
if($vpg4 != 0){
$nv4 = $vpg4/4;}

$vpg5 = $row_average['five'];
if($vpg5 != 0){
$nv5 = $vpg5/5;}


$tvpg = $vpg1 + $vpg2 + $vpg3 + $vpg4 + $vpg5;
$tnv = $nv1 + $nv2 + $nv3 + $nv4 + $nv5;

$traverage= round($tvpg/$tnv);