Kubin Company$$s relevant range of production is $27,000$ to $29,000$ units. When it produces and sells $28,000$ units, its average costs per unit are as follows: Average Cost per UnitDirect materials$ $8\mathrm{.}70$Direct labor$ $5\mathrm{.}70$Variable manufacturing overhead$ $3\mathrm{.}20$Fixed manufacturing overhead$ $6\mathrm{.}70$Fixed selling expense$ $5\mathrm{.}20$Fixed administrative expense$ $4\mathrm{.}20$Sales commissions$ $2\mathrm{.}70$Variable administrative expense$ $2\mathrm{.}20$Required:$1.$ For financial accounting purposes, what is the total amount of product costs incurred to make $28,000$ units?$2.$ For financial accounting purposes, what is the total amount of period costs incurred to sell $28,000$ units?$3.$ For financial accounting purposes, what is the total amount of product costs incurred to make $29,000$ units?$4.$ For financial accounting purposes, what is the total amount of period costs incurred to sell $27,000$ units?