As Patricia pointed out, because you are continuously renting out only a portion of your property, you should not be splitting things by rental days and personal days. You should indicate you are only renting a portion of the building.
If I remember correctly, that will cause TurboTax to split the expenses, but it does NOT split the depreciation (double check to be sure). For the depreciation, you would need to enter the "asset" and say it is used xx% for business.
