C:\>perl -w 676783.pl
Argument "0x2" isn't numeric in addition (+) at 676783.pl line 8.
Argument "0x28" isn't numeric in addition (+) at 676783.pl line 8.
0 0

##</code><code>##

>perl -le "print '0x42' + '0x10'"
0

##</code><code>##

>perl -le "print 0x42 + 0x10"
82