Incorrect Depreciation while using depreciation method of table basis and one time bonus rule

I am facing the issue in calculating accurate depreciation. Screenshots of the issue have been uploaded. Please help me in this regard.

The following are the desired result:

Cost = 100000

Year 1 Bonus Depreciation 50% (one time in first year) = 50000 i.e. 4,166.67 per month

Year 1 Normal Depreciation 15% mentioned in table method = 15000 i.e. 1250 per month

Year 2 and Onwards Normal Depreciation 30% of remaining NBV 35000 = 10500 i.e. 875 per month and it should be the same for the remaining life of the asset.