<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 There are three boxes labeled A, B, and C, each containing six cards labeled with the numbers 1, 2, 3, 4, 5, and 6, respectively. Calculate the total number of ways to draw one card from each of the boxes A, B, and C in sequence such that the numbers on the cards form an arithmetic sequence. Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
18
There are three boxes labeled A, B, and C, each containing six cards labeled with the numbers 1, 2, 3, 4, 5, and 6, respectively. Calculate the total number of ways to draw one card from each of the boxes A, B, and C in sequence such that the numbers on the cards form an arithmetic sequence.
test