[tablespoon]

> he's a retired billionaire

Not even. He's a "middle-aged tech centimillionaire."

[throwaheyy]

I think they really meant hectomillionaire?

“Centi” means one hundredth. In other words he is worth in the order of $10,000.

[tablespoon]

I think centi can mean either a hundredth or a hundred. It was appropriated by the metric system to mean a hundredth, but that doesn't obliterate the other sense.