Perl doesn't let you compute the "address of" anything, really. Even a scalar needn't live in a contiguous block of memory. You're probably thinking of references... And that gives you your answer: just bung a quick `<samp>\</samp>' on the element you want to access:

@x = (1,2,3);
@y = (4,5,6);
$x = [\@x, \@y];
$r = \$x->[1][2];
$$r = 8;
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