if (($answer < 1000) || ($len1 > 1e14)) {
            $type = "b/s";
         }elsif (($answer >= 1000) && ($answer <= 1e6)) {
            $type = "Kb/s";
            $answer = substr($answer, 0, 1)." ".$type if $len1 == 4;
            $answer = substr($answer, 0, 2)." ".$type if $len1 == 5;
            $answer = substr($answer, 0, 3)." ".$type if $len1 == 6;
         }elsif (($len1 > 1e6) && ($len1 <= 1e9)) {
            $type = "Mb/s";
            $answer = substr($answer, 0, 1)." ".$type if $len1 == 7;
            $answer = substr($answer, 0, 2)." ".$type if $len1 == 8;
            $answer = substr($answer, 0, 3)." ".$type if $len1 == 9;
         }else{