i want both the process and the answer, thank you.

Exercise 11-10 Cullumber Company purchased a piece of equipment at the beginning of 2014. The equipment cost $397,080. It has an estimated service life of 8 years and an expected salvage value of $60,840. The sum-of-the-years'-digits method of depreciation is being used. Someone has already correctly prepared a depreciation schedule for this asset. This schedule shows that $18,680 will be depreciated for a particular calendar year. Determine for what particular year the depreciation amount for this asset will be $18,680 Year of depreciation