
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
The final of a professional league is contested between Team A and Team B, using a best-of-seven format, i.e., the first team to win four games wins the championship, and the competition ends. In each game, the probability of Team A winning is $\frac{2}{3}$, and the probability of Team B winning is $\frac{1}{3}$. According to historical data, the organizer can earn a ticket revenue of 300,000 yuan per game. After the two teams have decided the winner, the questions are:  
(Ⅰ) What is the probability that the organizer's ticket revenue in the finals is 1.2 million yuan?  
(Ⅱ) What is the probability that the organizer's ticket revenue in the finals is at least 1.8 million yuan?

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