Inspection costs at one of Ratulowski Corporation's factories are listed below: Units Produced 920 979 926 910 April May June July August September October November December Inspection Costs $17,712 $18,100 $17,765 $ 17,610 $17,794 $ 17,680 $17,832 $17,110 $ 17,638 932 917 934 874 913 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.)