need help, will thumb up if correct

Culver Corporation purchased a boardroom table for $23,000. The company planned to keep it for four years, after which it was expected to be sold for $1,000. Assuming Culver sold the table for $8,100 at the end of the third year, calculate the gain or loss on disposal under each depreciation method. Straight-line method Double diminishing-balance method eTextbookand Media