Another approach would be to merge the JSON together then calculate the totals. 
my $json1 = decode_json($raw_json1); 
my $json2 = decode_json($raw_json2);
push @{ $json1->{whateverkey} }, @{ $json2->{whateverkey} };

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In reply to Re: Merge hashes in specific format by kschwab
in thread Merge hashes in specific format by ovedpo15

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