$1billion, must spend $100k/day (lasts 27 years), lose what you don't spend, no investments

You get $1billion.

You must spend $100k/day (no more no less) which will last roughly 27 years, you lose what isn't spent each day.

You can't spend on typical investments or anything that can provide extra income: no real estate, stocks, nor businesses and other. After the money runs dry you technically have zero income, negative even.

How are you spending the money over the 27 years? What will you do when the money's out?