234b interest

If the Self Assessment Tax is paid in instalments, then how will we calculate interest U/s 234B?

For example,

Tax payable less TDS and Advance Tax : 226144

Self Assessment tax

Rs.200000 paid on 31/05/12

Rs.53253 paid on 25/09/12

( difference in tax payable and S.A.Tax is due to Interest u/s 234C)

I want to know the calculation in this case...

This case is related to AY 2012-13. Please reply..