What is the total actual profit gained from orders made by American customers from 2003-01-06 to 2005-05-09?
total actual profit = SUM(SUBTRACT(priceEach, buyPrice)); American is a nationality of country = 'USA'; orderDate BETWEEN '2003-01-06' AND '2005-05-09';
SELECT SUM(T2.priceEach - T1.buyPrice) FROM products AS T1 INNER JOIN orderdetails AS T2 ON T1.productCode = T2.productCode INNER JOIN orders AS T3 ON T2.orderNumber = T3.orderNumber INNER JOIN customers AS T4 ON T3.customerNumber = T4.customerNumber WHERE T3.orderDate > '2003-01-05' AND T3.orderDate < '2005-05-10'