1. Different merchants have different installment rates, so it is necessary to know the name of the merchant before calculation;

2. The bill is divided into 12 installments of 2,5 yuan, with the principal of each installment:

28.33 yuan, the handling fee of each installment:

16.5 yuan, the total repayment amount of each installment:

224.83 yuan

3. Cash installment: 2,5 yuan in 12 installments, with the principal of each installment:

.