Inspection costs at one of Ratulowski Corporation's factories are listed below: Units ProducedInspection Costs April 918 $17,512 May 975 $17,900 June 924 $17,565 July 908 $17,410 August 930 $17,594 September 915 $17,480 October 932 $17,632 November 872 $16,930 December 911 $17,438 Management believes that inspection cost is a mixed cost that depends on units produced. Using the high-low method, the estimate of the fixed component of inspection cost per month is closest to: (Round your intermediate calculations to 2 decimal places.)