Half Year Depreciation Convention not calculating Depreciation Correctly

Hi All,

We have requirement that half year depreciation is charges in the year of acquisition of the asset irrespective of the date placed in service. I created a PR Convention whereby prorate date is 1 Oct. For example, From Date - 1 Apr 2015 | To Date - 31 Mar 2016 | Prorate Date - 1 Oct 2015

We have set divide depreciation 'Evenly' at books controls.

I have added one asset on 22 May 2015 with Asset Cost as 500000 and depreciation rate as 12%. System is calculating depreciation of 936.916 in May period. I am not able to understand the depreciation calculation done by system. I am expecting a depreciation of 2727.27 in this case as per below calculation-