The Hilton Skating Club used straight$-$line depreciation for a used Zamboni ice$-$resurfacing machine that cost $$51,500,$ under the assumption it would have a four$-$year life and a $$6,600$ trade$-$in value. After two years, the club determined that the Zamboni still had three more years of remaining useful life, after which it would have an estimated $$4,330$ trade$-$in value.

Required:

$1.$ Calculate the Zamboni$$s book value at the end of its second year.

$2.$ Calculate the amount of depreciation to be charged during each of the remaining years in the Zamboni$$s revised useful life.