Use the following information to answer the given question
\(\begin{array}{c|c} & N \\ \hline \text{Opening stock of raw materials} & 8,000\\ \text{Purchases} & 45,000 \\ \text{Closing stock of raw materials} & 9,500 \\ \text{Direct wages} & 6,450 \\ \text{Indirect wages} & 2,800 \\ \text{Depreciation - Plant and Machinery} & 3,200 \\ \text{Factory rents and rates} & 350 \\ \text{Opening work-in-progress} & 3,250 \\ \text{Closing work-in-progress} & 3,750\end{array}\)
Factory cost of production is