支付多少的利息再加上：plus a margin of 1,125 % pa是什么意思？

pa每年=per annual

那句英文吗？
好像是：加上每年1,125 % 的利润。

我不确定是不是利润，因为margin有很多意思。如下。

margin

⒈The minimum return that an enterprise may earn and still pay for itself.
边际收益：企业赢利并能付清自身费用所需的最低利润
⒉The difference between the cost and the selling price of securities or commodities.
盈余：证券或商品的成本与销售价之间的差额
⒊The difference between the market value of collateral and the face value of a loan.
贷款保证金的市面价格与面额之间的差价
⒋An amount in money, or represented by securities, deposited by a customer with a broker as a provision against loss on transactions made on account.
⒌交易保证金：由客户付给经纪人的一笔钱或一定数目的证券，作为防止在帐面交易时发生损失的经费