Brief Exercise 11-5 Windsor Company purchased a machine on July 1, 2018, for $30,240. Windsor paid $216 in title fees and county property tax of $135 on the machine. In addition, Windsor paid $540 shipping charges for delivery, and $513 was paid to a local contractor to build and wire a platform for the machine on the plant floor. The machine has an estimated useful life of 6 years with a salvage value of $3,240. Determine the depreciation base of Windsors new machine. Windsor uses straight-line depreciation. Depreciation base $