Table: Orders

+-------------------+------+
| Column Name       | Type |
+-------------------+------+
| order_id          | int  |
| item_count        | int  |
| order_occurrences | int  |
+-------------------+------+
order_id is column of unique values for this table.
This table contains order_id, item_count, and order_occurrences.

Write a solution to calculate the average number of items per order, rounded to 2 decimal places.

Return the result table in any order.

The result format is in the following example.

 

Example 1:

Input: 
Orders table:
+----------+------------+-------------------+
| order_id | item_count | order_occurrences | 
+----------+------------+-------------------+
| 10       | 1          | 500               | 
| 11       | 2          | 1000              |     
| 12       | 3          | 800               |  
| 13       | 4          | 1000              | 
+----------+------------+-------------------+
Output
+-------------------------+
| average_items_per_order | 
+-------------------------+
| 2.70                    |
+-------------------------+
Explanation
The calculation is as follows:
 - Total items: (1 * 500) + (2 * 1000) + (3 * 800) + (4 * 1000) = 8900 
 - Total orders: 500 + 1000 + 800 + 1000 = 3300 
 - Therefore, the average items per order is 8900 / 3300 = 2.70