Query: incorrect division results, round error.

Build 6.5.0-4349

Query

select 2/3

returns

[

 {

 "$1": 0.6666666666666666

 }

 ]

So, we have 16 digits after dot sign.

Now let's run the same in mysql:

select 2/3 from dual;

that gives me

0.6667

Let's increase precision:

set div_precision_increment = 16;

And now mysql query 

select 2/3 from dual;

gives me 

0.6666666666666667

which is still different from couchbase result.