Consider a $$6500$ piece of machinery, with a $5-$year depreciable life & an estimated $$1200$ salvage value. The projected use of the machinery when it was purchased & its actual production to date are shown below. Compute the machinery depreciation schedule by each of the following methods:

$1.$ Straight$-$line

$2.$ Sum$-$of$-$years$-$digits

$3.$ Double$-$declining balance

$4.$ Unit$-$of$-$production $($first $2$ years$)$