How do i solve this? ( include how calculations were made and account titles, and the numbers that go with those accounts) i am very confused.

exercise 10-24

on december 31, 2014, travis tritt inc. has a machine with a book value of $1,406,240. the original cost and related accumulated depreciation at this date are as follows.

machine
$1,944,800
less: accumulated depreciation
538,560
book value
$1,406,240

depreciation is computed at $89,760 per year on a straight-line basis.

presented below is a set of independent situations. for each independent situation, indicate the journal entry to be made to record the transaction. make sure that depreciation entries are made to update the book value of the machine prior to its disposal.
a. fire completely destroys the machine on august 31, 2015. an insurance settlement of $643,280 was received for this casualty. assume the settlement was received immediately.
b. on april 1, 2015, tritt sold the machine for $1,555,840 to dwight yoakam company.

c. on july 31, 2015, the company donated this machine to the mountain king city council. the fair value of the machine at the time of the donation was estimated to be $1,645,600.