please help me answer this hw problem

Gull Corp, is considering selling its old popcorn machine and replacing it with a newer one. The old machine has a book value of $5,000, and its remaining useful life is five yeaf5. Annual costs are $4,000. A high school is willing to buy it for $2,000. New equipment woufd cost $18,000 with annual operating costs of $1,500. The new machine has an estimated useful life of five years. Prepare a differential analysis. If an amount is zero, enter " 0 *. If required, use a minus sign to indicate a loss. Differential Anatysis Contirue with (Alternative 1) or Replace (Alternative 2) Old Machine Should the machine be replaced