use strict;
use warnings;
use Data::Dumper;

my @t = map {$_ * ($_+ ($_- 1) ) % 4} (2, 3, 4);
  print '@t: ', Dumper(\@t), "\n"; # 2 3 0
my $i = chr(0x34);   # '4'
  print "\$i: $i\n";
my $five = chr(55);  # '7'
  print "\$five: $five\n";
print "$i$five " . ($t[0] + $t[1]) . ($i / 2) . "." . $t[0] . chr(0x35) . ($t[0] * 3 + 1) . "\n";
my @x = map { (srand(1) * $_) % 9 } (28, 34, 57);
  print '@x: ', Dumper(\@x), "\n"; # 1 7 3
print $x[0] . ($x[0] * 2) . ($x[0] * 2 * 2 / 2) . " " . chr(48) . ($x[2] * 3) . "." . ($x[2] + 1) . chr(0x30) . (($x[1] % 4) - 3) . "\n";