binance has to pay(of the $4.3b):
$1.8Bill within 15 months (overall fine for crimes)
$1.6bill within 6 months (forfeiture of profits/fee's of running the business)
$0.9bill within 30days (clawback of funds sent to IRAN)
This won't be a problem at all for Binance because their revenue generation per year will be around 20 Billion so they can clear the penalty even before the due date.
But if federal authorities snoop into something they won't let go until they burn it into ashes so investors and traders be aware of holding any funds in the Binance exchange hereafter.