
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Gulliver arrived in the land of Lilliputians with 7,000,000 rubles. He spent all his money immediately on kefir in bottles, with each bottle costing 7 rubles (an empty bottle cost 1 ruble at that time). After drinking all the kefir, he returned the bottles and used all the money he received to buy more kefir. He noticed that both the price of kefir and the price of an empty bottle doubled. He repeated the process of drinking the kefir, returning the bottles, and buying more kefir, where the price of both kefir and the empty bottle doubled between each visit to the store. How many bottles of kefir did Gulliver drink?

Present the answer in LaTex format: \boxed{Your answer}
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