I need solve this

Mariam has a small bakery. She spends 200KD a month to rent a building for his company, 600KD a month for renting the machines, and 10KD for one hour of employees work. Mariam produced 300 cakes this month and sold at a price of 5KD. She has used 40 working hours. Calculate: 1. Mariam's fixed cost 2. Mariam's total cost of producing 300 cakes 3. Mariam's revenue when she sold 300 cakes 4. Mariam's profit when she sold 300 cakes