How do technology and automation impact accounting practices?

A machine is purchased for Tk. 70,000. Expenses incurred on its carriage and installation. Tk. 30,000. Calculate the amount of depreciation @ 20% p.a according the straight line method for the first year ending on 31st March 2025, if the machine is purchased on:
(i) 1st April, 2024
(ii) 1st July, 2024
(iii) 1st October, 2024
(iv) 1st January, 2025