Hi, can someone help me with this homework please.

John Little who is single is a new client of yours that has come to you with several tax issues with which he needs your help. He is an engineer that has his own practice for which he files a Schedule C and has net income from that of $165,000. In addition, he inherited some stock from his mother about 10 years ago for which she paid $4,000, but at her date of death it was worth $25,000. John sold the stock for $42,000 in 2020. Additionally, a friend gifted him a Manet painting valued at $500,000 at the date of the gift, but for which his friend paid nothing as it was inherited from his great grandmother in 1990. His friend has an appraisal for the painting at the time of his great grandmothers death and the value of the painting at her date of death was $200,000. John is thinking of selling the painting in 2020, but wants your advice as to whether he should sell it this year or next. (Note: John will probably have net income from his business of about $50,000 in 2021 because he plans to backpack through Europe for about nine months in 2021.) During 2020 John also sold a machine for $6,000 that he used in his engineering company that had an original cost of $32,000 and accumulated depreciation of $32,000. His final question to you relates to the house he lives in which he has maintained as his principal residence since 2005. He is thinking about renting out his house for 2021 while he is in Europe and then selling it in 2022 when he returns. He paid $125,000 for the house and put in a recreation room and new kitchen for a cost of $60,000. In addition, he has had the interior and exterior recently painted for a cost of $12,000. He thinks he can sell the house for $400,000 in 2022.

John wants to know the following:

1. What impact do each of the above transactions have on his tax return for 2020? Please refer to specific code sections of the Internal Revenue Code, if appropriate.
2. Calculate Johns taxable income for 2020 and what the tax liability would be given the facts surrounding the 2020 tax year. Please show your calculation to receive full credit.
3. What would be the impact to his 2022 taxes if he were to sell his house.