R&N Manufacturing produces music boxes. The fixed overhead rate is $5.10 per direct labor hour, and the company budgeted for 4,600 direct labor hours for the year. During the year, R&N produced 2,500 music boxes using 4,800 direct labor hours. Actual fixed overhead for the year was $23,000. Required: Calculate the company's fixed overhead spending variance. Be sure to note if it is favorable or unfavorable and show your calculations