Hm, you can try to plug the numbers in my example here. I don't get the gum effect as before or after though.
0,02% ------> Base Card drop
0,01% + ------> 50% VIP
0,06% + -------> HE Gum 200%
So we have 0,09% card drop rate when using HE Gum + VIP, which means almost 1/1000 (i'm bad at math, help me lol)?
Will this increasement be applied before gum (so we will have additional 0,06%, making it 0,15%), or just add it to 0,09%, making 0,11%?