Write SQL query to solve given problem: What was the total amount of sales handled by Nancy Davolio in December 1996, excluding discounts?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT SUM(T3.UnitPrice * T3.Quantity) FROM Employees AS T1 INNER JOIN Orders AS T2 ON T1.EmployeeID = T2.EmployeeID INNER JOIN `Order Details` AS T3 ON T2.OrderID = T3.OrderID WHERE T1.FirstName = 'Nancy' AND T1.LastName = 'Davolio' AND T2.OrderDate LIKE '1996-12%' AND T3.Discount = 0