Can you help me solve this general accounting problem using the correct accounting process?

Daft Supplies Ltd. started January with inventory valued at $43,500. During the month, they purchased additional merchandise worth $187,000 and paid freight charges of $8,200. Their warehouse manager recorded purchase returns of $5,700 due to damaged goods. At month-end, a physical count showed inventory worth $38,600 remained unsold. What is Daft Supplies' cost of goods sold for January, and what percentage of their total available goods does this represent? Answer this

Please provide the answer to this financial accounting question using the right approach.