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my $length = $total_length - length($prefix);
my $format = "${prefix}%0${length}d";

my $format = $prefix . '%0' . $length . 'd';

$from .. $to

map sprintf( $format, $_ ), ANONYMOUS_LIST

for (ANONYMOUS_LIST) {
   STRING = sprint( $format, $_ );
   put STRING into ANOTHER_ANONYMOUS_LIST;
}