A security is purchased on 25/01/2001; the date of maturity is 15/11/2001. Interest is paid half-yearly (frequency is 2). Using daily balance interest calculation (basis 3) how many days are there until the next interest payment?
一有价证券于 2001 年 1 月 25 日购买；有效期到 2001 年 11 月 25 日截止。利息为每半年支付一次（年付息的次数为 2）。如果使用日余额利息（基数为 3）计算，则到下次付息为止共有多少天？