[RESOLVED] converting raw seconds

[Supplement]

I can get the input to convert the raw seconds, than I convert the seconds to minutes based on the input and than divided by 60. I'm having travel with the last variable $my_hours, I can't get it to convert to hours based off >raw seconds >minutes >hours

Any help would be appreciated. thanks

$seconds = $seconds;
$inputname = $_POST["how_many"];
$my_var = $inputname * $seconds;

$seconds = $seconds;
$inputname = $_POST["how_many"];
$my_min = $seconds * $inputname / 60;


$seconds = $seconds;
$inputname = $_POST["how_many"];
$my_hours = $inputname * $my_min / 60;      ??????????