please explain

Jackson invested $218,000 in a passive activity five years ago. On January 1, 2017, his at-risk amount in the activity was $52,000. His share of the income and losses in the activity were $61,100 loss in 2017, $24,900 loss in 2018, and $90,500 gain in 2019. Required: a. How much can Jackson deduct in 2017 and 2018? b. What is his taxable income from the activity in 2019? Keep in mind the at-risk rules as well as the passive loss rules. Complete this question by entering your answers in the tabs below. Required A Required B How much can Jackson deduct in 2017 and 2018? (Leave no cells blank - be certain to enter "0" wherever required.) 2017 2018 Deduction Dequired