The A trivial PDL solution would be: 
use strict;
use warnings;
use PDL;

my $first  = pdl qw/1 2 3 4 5 6/;
my $second = pdl qw/2 9 8 4 7 6/;

my $result = $first - $second;

print "$result\n";

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In reply to Re: Subtraction by digit by moklevat
in thread Subtraction by digit by zli034

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