The module xml::simple is not load 
use XML::Simple;

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You might need to install XML::Simple. Since you are new to Perl, the recommendation is to use another XML parser.

How format numbers (1246633 => 1 246 633)
From http://perldoc.perl.org/perlfaq5.html#How-can-I-output-my-numbers-with-commas-added%3f: Number::Format

In reply to Re: XML Simple by toolic
in thread XML Simple by Arenas

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