Dan's employer assigned him to the New York office for 18 months. During this 18-month assignment, Dan spent $18,000 for apartment rent and $8,500 for meals. During this time, Dan's family remained in St. Louis. At the end of the 18-month assignment. Dan returns to St. Louis. Dan's employer paid for his airfare from St. Louis to New York and back to St. Louis, but did not reimburse him for his other temporary living expenses. What expenses can Dan deduct for travel away from home?