
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 company produces a product, investing 10 million yuan in the first year, with a revenue of 400 thousand yuan from sales. It is expected that the investment in each subsequent year will be half of the previous year, and the revenue from sales will be 800 thousand yuan more than the previous year. Additionally, when the planned investment is less than 200 thousand yuan, it will be set to 200 thousand yuan, and the revenue from sales that year will be equal to the previous year.  
(Ⅰ) Find the expected investment and revenue from sales in the nth year;  
(Ⅱ) From which year is the company expected to start making a profit? (Note: Profit means total revenue is greater than total investment)

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