Operation "+": no method found,
    left argument in overloaded package XML::LibXML::NodeList,
    right argument has no overloaded magic at check_server_room_temp line 13.
##</code><code>##

#!/usr/bin/perl

use warnings;
use strict;
use LWP::Simple;
use XML::LibXML;

my $url = 'http://192.168.1.8/xmlfeed.rb';
my $parser = XML::LibXML->new;
my $doc = $parser->parse_file($url);
my $temp = $doc->getElementsByTagName('currentReading');

my $math = $temp + 5;
print $math;
##</code><code>##

<currentConditions>
    <deviceName>Storm</deviceName>
    <readingDateTime>02/26/2016 14:57:07</readingDateTime>
    <tempUnits>Fahrenheit</tempUnits>
    <form>1T</form>
    <ports>
        <port number="1" name="Port 1">
            <condition type="temperature">
                <currentReading>73.0</currentReading>
                <highLimit>85</highLimit>
                <lowLimit>10</lowLimit>
                <alarmStatus>0</alarmStatus>
                <prevAlarmStatus>0</prevAlarmStatus>
            </condition>
        </port>
    </ports>
    <errorReadingSensor>0</errorReadingSensor>
</currentConditions>

##</code><code>##

#!/usr/bin/perl

use warnings;
use strict;
use LWP::Simple;
use XML::LibXML;

my $url = 'http://192.168.1.8/xmlfeed.rb';
my $parser = XML::LibXML->new;
my $doc = $parser->parse_file($url);
my @temp = $doc->getElementsByTagName('currentReading');

foreach(@temp){
    my $temp = $_->to_literal;
    my $math = $temp + 5;
    print $math;
}