KSRM Company purchases a factory machine at a cost of Tk$.5,50,000$ on January $1,2020.$KSRM expects the machine to have a salvage value of Tk$.50,000$ at the end of its $5-$yearuseful life. During its useful life, the machine is expected to be used $160,000$ hours. Actualannual hourly use was: $2020,50,000$; $2021,40,000$; $2022,45,000$; $2023,15,000$ and $2024,10,000.$ In $2022,$ equipment produced $24000$ units, with an estimated $1,00,000$ units beingproduced.Required:Calculate the depreciation expense for $2022$ using the following methods: i$)$ units of activitymethod; ii$)$ double declining method; iii$)$ sum of years' digits method; and iv$)$ straight$-$linemethod.