Atomic Corporation has a June $30$th year end. It has used straight line depreciation on its reactor since its purchase for $$904,800$ January $1,2018$ based on expectations of a ten year life. No salvage value was estimated. At the beginning of the fiscal year of July $1$st$,2022,$ management realized that that the reactor life was in reality only $4$ years. This is considered a change in accounting estimate and you are asked to solve it$.$

Required $1$: What is the amount of Depreciation Expense reported for the year ended June $30$th$,2022?$ $

$90480$

Required $2$: What is the amount of Depreciation Expense to be reported for the year ended June $30$th$,2023?$ $

$90480$

Required $3$: What is the amount of Accumulated Depreciation that is retroactively recognized on July $1$st $2022$ when the remaining useful life is re$-$estimated? $

Required $4$: What is the Net Book Value of the reactor on June $30$th$,2022?$ $

Required $5$: What is the Net Book Value of the reactor on December $31$st$,2022?$ $

Required $6$: What is the Net Book Value of the reactor on June $30$th$,2023?$ $