2. For example, if you spent 2000 yuan on April 15, the bookkeeping date is every 18, and the due repayment date is every 7 days.

Before May 7th, you only paid the minimum repayment, 200 yuan.

Then the circulating interest of the statement on May 18: 2000×0.05%×22 days (April15-May 7) +(2000-200 )× 0.05 %× 12 days (May 7-May 6,500)

(Phase II) If the minimum repayment amount of 200 yuan continues to be paid before June 7, plus the circulating interest of 32.8 yuan, that is, 232.8 yuan,

Then the circulating interest of the statement on June 18 is 2000×0.05%×30 days (May 8-June 7) +(2000-400 )× 0.05 %× 12 days (June 7-June18).

(Phase III) If the minimum repayment amount of 200 yuan continues to be repaid before July 7, plus the circulating interest of 39.6 yuan, that is, 239.6 yuan.

Then the circulating interest of the statement on July 18 is 37.4 yuan.

Phase IV 237.8 Phase V 236 Phase VI 233.8 Phase VII 233.6 Phase VIII 23 1.4 Phase IX 23 1.2 Phase X 229

If it is full and the minimum repayment amount, it has been paid off before February 7, 20 1 1 year.

The total interest of 10 period is 342.6 yuan.

In this way, according to the minimum repayment amount, you must pay an additional 342.6 yuan of revolving interest.