It will most likely be gone within 3 years. He’ll lose 43%+ to taxes and very easily blow the rest. I hope he is wise with his winnings but most lottery winners are not.
He will be smart. He will invest in sensible whiskey and a good woman.
Sad but true that most people who win these things blow it. There are exceptions but they usually have good advice from a financial advisor and an attorney. Simple advice would be to take 10% if what’s left after taxes for immediate enjoyment but make zero major changes in your life for at least a year, invest the rest in market funds and never touch the principal once it’s invested. A certain amount of discipline is required for that approach.