Your assumption that interest is a percentage of the loan amount is incorrect. The interest rate is annual. Each month, you’re paying 1/12th of 25% interest on the remaining balance.
The best way out of this is to pay every extra cent you have toward the loan principle.
Werewolfdad t1_iybnqhr wrote
Your math is bad. Loans amortize and accrue interest daily.
You pay 25% per year not in total.
Your only option is to yeet every extra dollar you have at the loan