Two optons:
1) You load 63 chars and get 24 standarts of heroes (38% of all SoH).
2) If you cant do 63, leave responses of how much chars you can load. If we gather 63 chars, each will still receive charsamount*0,38=SoHamount.
Ex: If you get 7.4 in this formula, u get 7 SoH. If you get 7.6, u get 8 SoH.