Ryan is self-employed. This year Ryan used his personal auto for several long business trips. Ryan paid $2,330 for gasoline on these trips. His depreciation on the car if he was using it fully for business purposes would be $3,600. During the year, he drove his car a total of 13,300 miles (a combination of business and personal travel). (Do not round intermediate calculations. Round your final answer to the nearest dollar amount) Problem 9-51 Part-a a. Ryan can provide written documentation of the business purpose for trips totaling 3,990 miles. What business expense amount can Ryan deduct (if any) for these trips? Maximum deductible amount