
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
Egor borrowed 28 rubles from Nikita and then repaid them in four payments. It turned out that Egor always returned a whole number of rubles, and each payment amount always increased and was exactly divisible by the previous one. What amount did Egor pay back the last time?

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