What is the GDP of this economy?

What is the GDP of this economy? Wheat and baking sector Dairy sector Sandwich sector Wheat sales 100 Cheese sales 700 Cheese sandwiches 1000 sales Bread sales 300 Milk sales 300 Bread purchase 200 300 Fertilizer sales 50 Cheese purchase 500 Wages Interest 100 Wheat purchase 100 Wages Fertilizer purchase 50 Wages 200 Interest 100