
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 large sewage pool contains a certain amount of sewage, with sewage continuously flowing in. If 4 sewage treatment devices are used, it takes 36 days to treat all the sewage in the pool. If 5 sewage treatment devices are used, it takes 27 days to treat all the sewage in the pool. How many days will it take to treat all the sewage in the pool if 7 sewage treatment devices are used?

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