TurboTax Schedule E - Days rented at fair rental value

[Sam Leon]

Can someone explain how that number is used?

The way it was worded:

Days rented at fair rental value _____ Days of personal use _____

seems to suggest it was intended to distribute between personal use and business use.

If I have a rental unit that's occupied by a tenant for 300 days and vacant and available for rent for 65 days do I put 365 in the "Days rented at fair rental value" or 300?

Thanks in advance.

I need a beer after a tax preparation weekend.