Richard, age 50, is employed as an actuary. For calendar year 2020, he had AGI of $130,000 and paid the following medical expenses: Medical insurance premiums $5,300 Doctor and dentist bills for Derrick and Jane (Richard's parents) 7,900 Doctor and dentist bills for Richard 5,100 Prescribed medicines for Richard 830 Nonprescribed insulin for Richard 960 Derrick and Jane would qualify as Richard's dependents except that they file a joint return. Richard's medical insurance policy does not cover them. Richard filed a claim for $4,800 of his own expenses with his insurance company in November 2020 and received the reimbursement in January 2021. What is Richard's maximum allowable medical expense deduction for 2020