
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
Koschei is counting his gold coins. When he counts them by tens, there are 7 coins left over, and 3 coins are missing to make a whole dozen. Koschei's total wealth is estimated to be between $300 and $400 coins. How many coins does Koschei have?

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