
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  $1962$  -digit number. It is divisible by  $9$ . Let  $x$  be the sum of its digits. Let the sum of the digits of  $x$  be  $y$ . Let the sum of the digits of  $y$  be  $z$ . Find  $z$ .

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