How much money would you have to spend a day in order to spend 100 billion dallors in 80 years?

To spend $100 billion in 80 years, you would need to spend approximately $3.42 million per day. This is calculated by dividing $100 billion by the total number of days in 80 years, which is about 29,200 days. Therefore, $100,000,000,000 ÷ 29,200 days = approximately $3,425,000 per day.