Curt is self-employed as a real estate salesman and drives his car frequently to take clients to see homes for sale. Curt drove his car 20.000 miles for business purposes and 25,000 miles in total. His actual expenses for operating the auto including depreciation are $10.000 since he drove it so much during the year. Curt has used the actual cost method since he started his business in 2014. How much is Curt's deductible auto expense for the year