$[$No Diagram$]$ A firm begins the year holding $100$ dollars in raw materials inventory and $200$ dollars in finished goods inventory. During the current year they purchase $900$ dollars in raw materials and produce $1400$ dollars of finished goods. At year end the firm holds $300$ dollars in raw materials inventory and $100$ dollars in finished goods inventories. The firm pays $100$ dollars in salaries. There are no taxes or subsidies. Calculate Value Added for this firm.