Legal analysis: it belongs to usury. The bank's will not be so high, with a monthly maximum of 1047 yuan for 36 issues in three years, and the fluctuation will not exceed that of 2 yuan.

Legal basis: Article 6 of "Several Opinions of the Supreme People's Court on People's Courts Handling Loan Cases" can be higher than the bank's interest rate, and local people's courts can specifically grasp it according to the actual situation in the region, but the maximum shall not exceed 4 times (including interest rate) of the bank's similar loan interest rate. Beyond this limit, the excess interest will not be protected.