32 times 1:30 (fx 3*R-acha or 3*Puding or 3* Pero or 3*radar or 1* Reveal 1 * R.Gacha)

Rewards:
2 * SR-Girl
1 * R-Girl
1 * N.Girl
80 * Candy
10 * SR-Wild5
10 * Peromin
7 * R-Gacha
4 * Glases
4 * Radar
9 * Pudding
4 * Pudding half

Donated 200+ R-Gacha one at a time - 0 SR-Girl so far but around 20 R-Girls.

So 96 R-gacha gave 2 SR-Girls (when using 3 each time) while 200 R-gacha gave 0 SR-Girls (when using 1 each time)