Should be something like this:
The SFR multiplier from SPR will be:
1 + 634 / 361 = 2.75
So the total SFR is:
MonsterSFR * SkillSFR * SPRbonus = 1.10 * 5.13 * 2.75 = 15.51
A level 360 Chapparition summonded from a 10 star card using a level 10 skill will have:
MINPATK:
= BaseMinPATK + BaseMinPATK * (0.05 + (skillLevel * 0.02) + cardLevel * 0.05)
= 934 + 934 * 0.75
= 1634
MAXPATK:
= BaseMaxPATK + BaseMinPATK * (0.05 + (skillLevel * 0.02) + cardLevel * 0.05)
= 2181 + 934 * 0.75
= 2881
Damage against a Vilkas Mage (1031 def, 1869 weapon matk):
Min:
= TotalSFR * (MINPATK + WeaponMATK) * log10(((MINPATK + WeaponMATK)/ (PDEF + 1))^0.9 + 1)
= 15.51 * (1634 + 1869) * log10(((1634 + 1869) / (1031 + 1))^0.9 + 1)
= 32733
Max:
= 15.51 * (2881 + 1869) * log10(((2881 + 1869) / (1031 + 1))^0.9 + 1)
= 51180
Try using 1634 - 2881 as PATK values for your tests.