# Long line
my $absolutely_very_long_value = $value_reference->{$first_record}{$second_key}{super_property} + $value_reference->{$second_record}{$second_key}{super_property};

# Split Line
my $absolutely_very_long_value 
  = $value_reference->{$first_record }{$second_key}{super_property} 
  + $value_reference->{$second_record}{$second_key}{super_property};