\(\begin{array}{c|c} & \text{N} \\ \hline \text{Debtors opening} & 4000 \\ \hline \text{Debtors clsoing} & 1500 \\ \hline \text{Cash received from debtors} & 8500 \\ \hline \text{Bad debts written off} & 350 \\ \hline \text{Discount allowed} & 500 \\ \hline \text{Discount Received} & 1000\end{array}\)

What is the amount of sales of sales for the year?