
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
A cleaner was mopping the stairs in a skyscraper. To make the work more enjoyable, she counted the cleaned steps. When she had cleaned exactly half of the steps, she took a break. After a while, she started working again and wanted to continue counting the steps. However, when trying to recall the number of steps she had already cleaned, she mistakenly read the correct three-digit number backward, creating a smaller number, and counted from there. After mopping all the stairs, she ended at the number 746. How many steps could she have actually cleaned?

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