What is easy to misunderstand here is its plus and minus signs.

The balance of the last period: it is 457.97 that you did not repay in the last period;

Total expenses: it is 157.31 that you consumed in this period;

Total deposits: That is, you deposited 600 for repayment last time (exceeding the 457.97 in the previous period, which means you paid 142.03 more);

The balance of this period: the amount you need to repay this time is 15.28 (this time the amount is 15.28) You should repay 157.31, but you have already repaid 142.03 more in the last period, so you only have to repay 15.28 this time)

Bill date: October 18, 2010, the end date for counting your consumption;

Repayment due date: This means that you need to repay the balance of the current period before this date;

Minimum repayment amount: This means that you must repay at least 10.00 in this period.