
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
During the summer vacation, Xiao Li participated in a social practice activity. She purchased 100 mobile power banks at a wholesale price of $m$ yuan each from a wholesale market, and then sold each of them at a markup of $n$ yuan in the market. Express the total selling price of 100 mobile power banks in terms of $m$ and $n$. <br/>$(1)$ Find the total selling price of 100 mobile power banks. <br/>$(2)$ As the new school year approaches, Xiao Li decided to sell the remaining power banks at 20% off after successfully selling 60 power banks. <br/>① What is her total revenue? <br/>② If she did not offer a discount and sold all the power banks, how much more profit would she make compared to the actual sales?

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