Marshall$-$Miller & Company is considering the purchase of a new machine for $$50,000,$ installed. The machine has a tax life of $5$ years. Under the new tax law, the machine is eligible for $100\%$ bonus depreciation, so it will be fully depreciated at t $=0.$ The firm expects to operate the machine for $4$ years and then to sell it for $$21,500.$ If the marginal tax rate is $25\%,$ what will the after$-$tax salvage value be when the machine is sold at the end of Year $4?$