>>20616388If you managed to share 1200 per day these would be your odds (Average of 10000 times).
To share 1200 per day you would need to completely empty your entire storage and refill it 3 times a day, since the maximum Pokemon on storage in gen 3 is 420.
Again, you would have to do this every single day.
You could try doing that right now and see how tedious checking 400 can be.