Can someone please help explain this one?

At the beginning of 2019, Metatec Inc. acquired Ellison Technology Corporation for $630 million. In addition to cash, receivables, and inventory, the following assets and their fair values were also acquired: Plant and equipment (depreciable assets) Patent Goodwill $ 153 million 43 million 100 million The plant and equipment are depreciated over a 10-year useful life on a straight-line basis. There is no estimated residual value. The patent is estimated to have a 5-year useful life, no residual value, and is amortized using the straight-line method. At the end of 2021, a change in business climate indicated to management that the assets of Ellison might be impaired. The following amounts have been determined: $ 83 million 63 million Plant and equipment: Undiscounted sum of future cash flows Fair value Patent: Undiscounted sum of future cash flows Fair value Goodwill: Fair value of Ellison Technology Corporation Fair value of Ellison's net assets (excluding goodwill) Book value of Ellison's net assets (including goodwill) $ 20 million 13 million $ 483 million 420 million 500 million* Required: 1. Compute the book value of the plant and equipment and patent at the end of 2021. 4. Determine the amount of any impairment loss to be recorded, if any, for the three assets. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Required 1 Required 4 Compute the book value of the plant and equipment and patent at the end of 2021. (Enter your answers in millions.) Book Value Plant and equipment million 63,000,000 Patent 13,000,000 million Required 1 Required 4 > Required: 1. Compute the book value of the plant and equipment and patent at the end of 2021. 4. Determine the amount of any impairment loss to be recorded, if any, for the three assets. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Required 1 Required 4 Determine the amount of any impairment loss to be recorded, if any, for the three assets. (Enter your answers in millions. Negative amounts should be indicated by a minus sign.) Impairment Loss Plant and equipment 20,000,000 million Patent $ 7,000,000 million Goodwill 30,000,000 million