
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 store sells $R$ items per day and restocks periodically: it restocks once every certain number of days, with a fixed amount per restocking. Given that the restocking fee per shipment is $b$, and the daily storage fee per item is $s$, how many days should there be between restocks to minimize costs? What should be the restocking quantity? (Assume that the scale of product circulation is very large and the period is very long, so that marginal effects can be ignored and days and restocking quantities can be treated as real numbers.)

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