15. The demand for a product is estimated at 2,500 units per week. The ideal production capacity is 6,250 units per week, but 20% of the capacity is used for maintenance work and adjustments to production. The replenishment special cost is estimated at SEK 7,500 per order. The company works with a stock interest rate of 20% and the product's value added is SEK 700. Production takes place 52 weeks per year. How large is the stock when production ends in a stock cycle given that an appropriate stock model is used? Round off to the nearest whole number