Reason:

1. The total repayment amount is too high: the repayment amount is 84,33, which exceeds nearly 7% of the original loan. This means that nearly 7% of interest and expenses need to be paid in 36 periods, which is a heavy burden.

2. interest rate is too high: it is impossible to know the specific interest rate according to the given information, but judging from the gap between the total repayment amount and the loan amount, it is likely that there is a high interest rate.

3. Long repayment period: the loan is repaid in 36 installments, which will increase the repayment pressure of the borrower and may lead to more interest expenses.

4. Lack of relevant background information: There are few conditional information mentioned in the answer, so it is impossible to know the credibility of the loan platform, the credit status of the borrower and other important factors. Without other necessary information, especially the details related to interest rates and expenses, it is difficult to make an accurate judgment.

Summary:

According to the given information, it seems unreasonable to repay 8433 in 36 installments for 5 loans. Borrowers should carefully consider the high repayment amount and the possible high interest rate, and also pay attention to the loan period and the reliability of the loan platform. Before making a decision, it is recommended to consult a professional and seek more relevant information.