Greg$$s Bicycle Shop has the following transactions related to its top$-$selling Mongoose mountain bike for the month of March. Greg's Bicycle Shop uses a periodic inventory system.

Date Transactions Units Unit Cost Total Cost

March $1$ Beginning inventory $20$ $ $250$ $ $5,000$

March $5$ Sale $($$$400$ each$)15$

March $9$ Purchase $102702,700$

March $17$ Sale $($$$450$ each$)8$

March $22$ Purchase $102802,800$

March $27$ Sale $($$$475$ each$)12$

March $30$ Purchase $93002,700$

$ $13,200$

For the specific identification method, the March $5$ sale consists of bikes from beginning inventory, the March $17$ sale consists of bikes from the March $9$ purchase, and the March $27$ sale consists of four bikes from beginning inventory and eight bikes from the March $22$ purchase.

$4.$ Using weighted$-$average cost, calculate ending inventory and cost of goods sold at March $31.($Round your intermediate and final answers to $2$ decimal places.$)$