Managerial Accounting

Champion Sports Inc. ("CSI") manufactures round trampolines ("RT") and octagonal trampolines ("OT").Monthly sales and expenses is Product LineRTOT, Sales$5,000$7,000, Variable Expenses($2,100)($2,200), Fixed Expenses($3,200)($2,100), and Net Profit (Loss)($300)$700. If CSI stops producing RT and sells the patent to a competitor, it will receive $800 per month. Calculate the amount of incremental gain/ (loss) from closing down the production line to manufacture RT.State clearly whether this amount is a gain or a loss.Show all your workings clearly.