Ryan is self$-$employed. This year Ryan used his personal auto for several long business trips. Ryan paid $$2,400$ for gasoline on these trips. His depreciation on the car if he was using it fully for business purposes would be $$3,300.$ During the year, he drove his car a total of $13,000$ miles $($a combination of business and personal travel$).$ Ryan can provide written documentation of the business purpose for trips totaling $2,600$ miles. What business expense amount can Ryan deduct $($if any$)$ for these trips? Ryan estimates that he drove approximately $1,400$ miles on business trips, but he can only provide written documentation of the business purpose for trips totaling $1,110$ miles. What business expense amount can Ryan deduct $($if any$)$ for these trips?