给出一组数字和一个操作符（+，-，*，/），请让GPT模型计算这些数字的总和、差异、乘积或商。


Numbers: 18, 6, 3, 9
Operator: *
Answer: 2916. 

Explanation: 

The product of 18, 6, 3, and 9 is calculated by multiplying them together as follows: 

18 x 6 x 3 x 9 = 2916

Therefore, the answer is 2916.