The interest is 54 19 yuan. According to relevant information, taking Chinese mainland as an example, if the loan amount of housing provident fund is 1.5 million yuan, the loan interest rate is 3.25%, and the repayment is made in the form of equal principal and interest (the monthly repayment amount is the same), and the loan period is 4 years (that is, 48 months), then the total loan interest is about 54 1.9 yuan.