In British English, a billion used to be equivalent to a million million (i.e. 1,000,000,000,000), while in American English it has always equated to a thousand million (i.e. 1,000,000,000). British English has now adopted the American figure, though, so that a billion equals a thousand million in both varieties of English.
When HubTurd was living in a camper in the desert he got a million in cash delivered once a week. Which is 50 million a year.
That was about 26 years ago.
By my reckoning this is only a billion dollars.
DM is not doing badly.