
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 first step in calculating $1 \times 3 \times 5 \times 7 \times 9$ is to multiply $3 \times 5$, resulting in $15$. The second step is to multiply the result of the first step, $15$, by $7$, resulting in $105$. The third step is

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