<|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
 John had a full basket of trempons. First, he met Anna and gave her half of his trempons and an additional half trempon. Then, he met Banna and gave her half of the remaining trempons and an additional half trempon. After that, he met Vanna and again gave her half of the remaining trempons and an additional half trempon, leaving his basket empty. How many trempons did John have initially? 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
7
John had a full basket of trempons. First, he met Anna and gave her half of his trempons and an additional half trempon. Then, he met Banna and gave her half of the remaining trempons and an additional half trempon. After that, he met Vanna and again gave her half of the remaining trempons and an additional half trempon, leaving his basket empty. How many trempons did John have initially?
test