
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
A chemistry student conducted an experiment: he poured out several liters of liquid from a tank filled with syrup solution, refilled the tank with water, then poured out twice the amount of liquid and again refilled the tank with water. As a result, the amount of syrup in the tank decreased by a factor of $\frac{25}{3}$. Determine how many liters of liquid the student poured out the first time if the volume of the tank is 1000 liters.

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