aggregation in expression qliksense

[Aspiring_Developer]

Hello, 

I have below scenario :-

Division  | Department | Person | Sum(Hours)

HR            | People| Suresh| 56

Finance|  Cost | Naresh|37

My requirement is to create a table with below functionality:-

If is select "Division " - it should  show the Hours value as  56+37 =93 then 93/ 2=> 46.5

If select 'Department'- it should be same as above

 My final visualization should be like:-

Division |Hours

HR| 46.6

When user select on Division , it should drill down to department like below:-

Department| Hours

People| 46.6

When user select Department, it should show people like below:-

Suresh| 46.6

=========================

As of now, i have created drill dimension in qliksense and then used get selected count for selections.

But how to use do the aggregation like '56+37 =93 then 93/ 2=> 46.5' . I should i achieve in expression for each drill down selection?

Can anyone please help ?

Thanks in advance

[Digvijay_Singh]

Can you share your test app, I am not able to understand how you can show 46.6 against Suresh when the underlying data has value 56, Similar with HR linked to 56..not able to understand the data model..