
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 purchases 400 tons of a certain type of goods every year, buying x tons each time. The freight cost is 40,000 yuan per time, and the total annual storage cost is 40,000x yuan. To minimize the sum of the total freight and total storage costs for the year, x should be equal to _______ tons.

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