
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
Xiaopang used his salary for the month to buy a stock. On the first day, the stock price increased by $\frac{1}{10}$, on the second day it decreased by $\frac{1}{11}$, on the third day it increased by $\frac{1}{12}$, and on the fourth day it decreased by $\frac{1}{13}$. At this point, the value of his stock is exactly 5000 yuan. What was Xiaopang's salary for the month in yuan?

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