
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
In a box, there are 80 white pieces and 50 black pieces. Each time, 3 white pieces are taken out and 3 black pieces are put in. After doing this a certain number of times, the number of white pieces and black pieces will be exactly equal. Calculate the number of times this must be done.

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