How to get total for week based on daily data as seperate colum

Hi Experts,

I am developing daily report, it contains key figures as operations plan and actual output.

Now I am getting data as below for calendar day on daily basis.

Calendar day:

01.03.2013          02.03.2013             03.03.2013          04.032013         05.03.2013            06.03.2013 07.03.2013      Total for Week

20(o/p) &10(A/O)   15(O/P) & 5(A/O)   7(O/P) & 5(A/O)  6(O/P) & 3(A/O)  50(O/P) &15(A/O)  N/A            N/A

Now I want  to get  total for weekly based on these days as separate Column and also Average daily.

Can any one got the same requirement or how can I implement this to fulfill my requirement.

Can any one through some input to achieve this requirement.

Regards

Reddy.