An electronics firm invested $60,000 in a precision inspection device. It cost $4000 to operate and maintain in the first year and $3000 in each later year. At the end of 4 years, the firm changed their inspection procedure, eliminating the need for the device. The purchasing agent was very fortunate to sell the inspection device for $60000, the original price. Compute the equivalent uniform annual cost during the 4 years the device was used. Assume interest at 10% per year.