While "trillions" is definitely inflated and hyperbole, I don't think it's THAT far off.
According to this The Guardian article [0] "At least $881m in drug trafficking money was laundered throughout the bank's accounts."
So 0.88 Tn. Definitely not "trillions" but definitely much more than I would've expected if they said "billions laundered".
Also, it says "at least", which I take it to say that the investigation was not complete so a final number couldn't be calculated and only a "lower" cap is given. Potentially it could still be "trillions" as in e.g. "1.3 trillions" (if that final figure is ever calculated or even published of course). So inflated, yes. Hilarious... not so sure.
[0] https://www.theguardian.com/business/2012/dec/11/hsbc-bank-u...
[1] https://www.theglobeandmail.com/incoming/article6209613.ece/...
You mean 0.00088 Tn.
While I agree with your sentiment, there is no need to use such inflated and hilarious numbers.