trancheBReturn = (totalTVL * (1 + extProtRet) - trATVL * (1 + trARet) - trBTVL) / trBTVL
DeltaAPY = extProtRet - trancheBReturn
DeltaAPYPercentage = DeltaAPY / extProtRet
trBPercentage = DeltaAPYPercentage + balFactor
trBSliceRewards = trBPercentage * dailySliceAmount
trASliceReward = dailySliceAmount - trBSliceRewards
SolvencyIncentiveRatio = trASliceReward / dailySliceAmount