my $var1 = "12345";
    my $res1 = $var1 + 1;
    print "Result 1:  [$res1]\n";


##</code><code>##

    Result 1:  [12346]


##</code><code>##

    my $var2 = "1 2 3 4 5";
    my $res2 = $var2 + 1;
    print "Result 2:  [$res2]\n";


##</code><code>##

    Result 2:  [2]