Carla Vista Inc. manufactures snowsuits. Carla Vista is considering purchasing a new sewing machine at a cost of $$2\mathrm{.}45$ million. Its existing machine was purchased $5$ years ago at a price of $$1\mathrm{.}8$ million; six months ago, Carla Vista spent $$55,000$ to keep it operational. The existing sewing machine can be sold today for $$244,635.$ The new sewing machine would require a one$-$time, $$85,000$ training cost. Operating costs would decrease by the following amounts for years $1$ to $7$ :

$\backslash$table$[[$Year $1,$$$389,600$