Trump's returns probably wouldn't itemize every fuel receipt for his jet or the like, but they would likely include total deductions for different types of expenses such meals, travel and more. (fortune.com)
Assume a couple has $ 80,000 of total income, and deductions include $ 4,000 of state income taxes and $ 11,000 of mortgage interest, for total deductions of $ 15,000 (again ignoring personal exemptions for simplicity). (kitces.com)