goodday fellow monks,
sometimes the smallest issues seem to be the biggest hurdles in my coding adventures.

I have a file with data where numbers with decimals are written like  100,25. I want to replace the comma for a dot and multiply numbers but I can't get it working. 
#!/usr/bin/perl -w
use strict;
use warnings;
use diagnostics;
use Data::Table;

my $table =
  new Data::Table(
    [ [ "100,20", "18,20", "19,45", "7,25" ], [ "2", "3", "2", "2" ],[
+0,0,0,0] ],
    [ 'Numbers', 'Values' , 'Result'], 1 );

$table->colsMap( sub { $_->[2] = ($_->[0] =~ s/,/\./g) * $_->[1] } );

print $table->csv;

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Thanks for any reply

In reply to replace comma for dot re. calculation by GertMT

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