Write SQL query to solve given problem: Find the number of baseball ordered in December 2017.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T2.OrderNumber) FROM Products AS T1 INNER JOIN `Sales Orders` AS T2 ON T2._ProductID = T1.ProductID WHERE T1.`Product Name` = 'Baseball' AND T2.OrderDate LIKE '12/%/18'