Paul Bunyon Lumber Co. produces several products that can be sold at the split-off point or processed further and then sold. The following results are from a recent period: Sales Value Additional Sales Value After Product at Split-off Variable Costs Further Processing Green lumber $159,600 $24,000 $178,000 Rough lumber 124,000 28,200 173,600 Sawdust 102,000 19,600 130,000 The additional profit that would result from processing rough lumber further is?