
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
Wei uses a crowbar to move a large stone. It is known that the resistance and resistance arm are $1000N$ and $0.6m$ respectively. When the effort arm increases from $1.5m$ to $2m$, moving this stone can save _____ $N$ of force. ($($Lever principle: Resistance $\times$ Resistance arm $=$ Effort $\times$ Effort arm$)

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