Sandy Ltd owns a machinery, acquired in 2020. The machinery cost $250 000. Valuations of the machinery is undertaken by an independent valuer on 30 June 2021 and 30 June 2023. The machinery is revalued to $220 000 on 30 June 2021 and revalued to $280 000 on 30 June 2023. Required Assuming asset revaluations were undertaken for the machinery in both 2021 and 2023, provide the journal entries for both years. Show workings and calculations.