
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
Kuba wrote down a four-digit number consisting of two even digits and two odd digits. If he crossed out the two even digits, he would get a number that is four times smaller than the number he would get if he crossed out the two odd digits.

What is the largest number with these properties that Kuba could have written down?

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