Wildhorse, Inc. manufactures machinery used in the mining industry. On January $2,2021$ it leased equipment with a cost of $$570000$ to Silver Point Co$.$ The $5-$year lease calls for a $10\%$ down payment and equal annual payments of $$190966$ at the end of each year. The equipment has an expected useful life of $5$ years. Silver Point's incremental borrowing rate is $9\%,$ and it depreciates similar equipment using the double$-$declining balance method. The selling price of the equipment is $$870000,$ and the rate implicit in the lease is $7\%,$ which is known to Silver Point Co$.$ What is the book value of the leased asset at December $31,2921?$