
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
Wearing masks scientifically is one of the effective measures to block the spread of viruses. A mask manufacturer received an order from a company. After producing for a period of time, there were still 280 million masks left unproduced. The manufacturer's production efficiency increased by 40% after changing equipment. As a result, the order was completed 2 days ahead of schedule. Find out how many million masks were produced per day before and after changing the equipment.

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