Poon's Noodle House is considering replacing their noodle-processing machine. The current machine was purchased 4 years ago at a total cost of $20,000. It is being depreciated straight-line to a zero value over 8 years. If Poon sells the noodle-processing machine for $6,000, what is the after-tax cash flow to Poon's Noodle House? Use 40% for the effective tax rate.