Qantas never had 12 747-300’s. In the early 2000’s, They had 6 300’s Plus 5 200’s and 2 SP’s. By 2005 all the 200’s and SP’s had gone.
The 744 fleet at 32? I’m pretty sure it topped out at 30. There was a BA leased aircraft at one point, but that was before the ER’s showed up. Do you mean 747 fleet in total, including the classic?
I count 28 A330’s.