Computation of Taxable Income. During 2018, Mark Johnson, a single, cash method taxpayer incurred the following expenditures: Qualified medical expenses $8,000 Investment interest expense 16,000 Other investment activity expenses 15,000 Qualified residence interest 12,000 Interest on loan on personal auto 2,000 Charitable contributions 3,000 State income tax paid 7,000 State sales tax paid 4,500 Property taxes 4,000 Tax return preparation and consulting fees 5,000 Leberon Dean' income consisted of the following items: Salary $70,000 Interest income 7,000 Long-term capital gains 23,000 Long-term capital losses (15,000) Compute Leberon Dean' taxable income for the year (assuming that he makes an election to have the net capital gain taxed at the regular tax rates).