In Rothenberg v. Follman, 19 Mich App 383, 388-389; 172 NW2d 845 (1969), the Court noted: . . a court of equity has the power to relieve the defaulting purchaser from the forfeiture and to compel specific performance by the seller when in the court's judgment to do otherwise would result in an unreasonable forfeiture. Whether a particular forfeiture is unreasonable depends upon a number of factors, among them the amount and length of the default, the amount of the forfeiture (i.e., the sum of the amounts paid to the seller and the value of the property at the time of forfeiture less the contract price), the reason for the delay in payment and the speed with which equity's aid was sought.