zibzaba: To recap, you have a FARMER_ORDERS table that is not linked to the LABOR_EXPENSES table or to CUSTOMER_ORDERS or to the two Queries that total your Office & Transport expenses. Thus each is reported uniquely:
Labor 1, farmer 1, customer 1, amount 1, amount 1;
Labor 1, farmer 2, customer 1, amount 1, amount 1;
Labor 1, farmer 3, customer 1, amount 1, amount 1;
Labor 2, farmer 1, customer 1, amount 1, amount 1;
Labor 2, farmer 2, etc.
a total of 9 distinct records.