
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
Calculate $x$ such that the sum \[1 \cdot 1979 + 2 \cdot 1978 + 3 \cdot 1977 + \dots + 1978 \cdot 2 + 1979 \cdot 1 = 1979 \cdot 990 \cdot x.\]

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