Calculate Gross working capital , Net working capital and length of the Working Capital Cycle?

Level of Activity = 1,040,000 units

Selling Price = PKR 20 per unit

Raw Material Cost = PKR 8 per unit

Labor Cost = PKR 3 per unit

Overhead Cost = PKR 6 per unit

Raw Material in Stock = 4 weeks

Processing Time = 2 weeks

Finished Goods in stock = 3 weeks

Credit received from customer is 8 weeks

Credit received from supplier is 6 weeks

Delay in payment of wages is 4 weeks

Delay in payment of overheads is 5 weeks

Prepaid Expenses = PKR 20,000

Outstanding Expenses = PKR 50,000

Contingency is 5% of Gross Working Capital