Calculation of Periodic Using the Declining$-$Balance Method and the Units$-$of$-$Activity Method $(25\%)$ Task: Calculate periodic depreciation for a machine using both the declining$-$balance method and the units$-$of$-$activity method. Instructions: Assume a machine was purchased for $$80,000$ with a salvage value of $$8,000,$ a useful life of $8$ years, and expected usage of $100,000$ hours. For the units$-$of$-$activity method, assume the machine was used for $15,000$ hours in year $1,20,000$ hours in year $2,$ and $25,000$ hours in year $3.$ Set up an Excel sheet to calculate the depreciation for each year using both methods.