
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
Given that 30% of the restaurant's annual hamburger sales occur in the fall, and the restaurant sold 4 million hamburgers in the spring and 6 million in the summer, determine the number of million hamburgers sold in the winter if the restaurant's total annual sales were 20 million hamburgers.

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