Below shows the Balance Sheet, Income Statement, and Historical R&D expense of Tesla (ticker: TSLA) reported in the 10-K files. Assume a 5 year R&D amortization life and a 21% income tax rate, please calculate (1). R&D amortization expense, (2) adjusted operating income, (3) adjusted net income, (4) R&D asset value, and (5) adjusted retained earnings in 2019 and 2020. Tesla Inc (TSLA)
Historical R&D Expense
Year	2020	2019	2018	2017	2016	2015	2014
R&D Expense	1,491	1,343	1,460	1,378	834	777	499
Year	2013	2012	2011	2010	2009	2008	2007
R&D Expense	232	274	209	93	19	54	63

Assets
Total Current Assets	26,717	12,103	8,306	6,571
Net Property, Plant & Equipment	23,375	20,199	19,691	20,492
Other Property, Plant & Equipment	28,335	23,844	22,886	22,436
Operating Lease Right-of-Use Assets	1,558	1,218	0	0
Accumulated Depreciation	6,518	4,863	3,195	1,944
Total Long-Term Investments	613	663	820	898
Intangible Assets	520	537	351	422
Other Assets	923	807	572	273
Total Assets	52,148	34,309	29,740	28,655
Liabilities
Current Liabilities
Total Current Liabilities	14,248	10,667	9,992	7,675
Long-Term
Long-Term Debt	10,888	12,627	11,116	11,152
Long-Term Debt excl Lease Obligations	8,513	10,402	8,410	8,829
Capital and Operating Lease Obligations	2,375	2,225	2,706	2,323
Provision for Risks & Charges	519	581	413	2,309
Deferred Tax Liabilities	151	-	-	-
Other Liabilities	2,663	2,324	1,905	1,887
Total Liabilities	28,469	26,199	23,426	23,023
Equity
Common Equity
Other Common Equity	27,624	12,701	10,241	9,212
Retained Earnings	-5,399	-6,083	-5,318	-4,974
Total Shareholders' Equity	22,225	6,618	4,923	4,237
Accumulated Minority Interest	1,454	1,492	1,390	1,395
Total Equity	23,679	8,110	6,314	5,632
Total Liabilities & Shareholders' Equity	52,148	34,309	29,740	28,655