times the number of days, times the contract amount,

乘以天数乘以合约总额
divided by B, times 100.

除以B 乘以100
This 100 is here because L and R are assumed to be measured in hundreds,

这里乘以100是因为L和R以百分比为单位
like percent--3% is really 0.03 x L x D.

就像百分之...3%应该是0.03xLxD
This equation might be easier if you divide

这个等式可以化简
both numerator and denominator by 100 then you can see

分子和分母同除以100 然后
that all that 100 is doing is correcting the interest rates

再乘以100的目的就是将修正利率的
from percent to--from 3% to 0.03.

百分比...从3%修正为0.03
All it's doing--all this contract

这里所做的...这个合约
is is an amount--a promise--

就是对总额的承诺...
to pay the difference between the contract

以支付既定日期当天合约利率
and the actual interest rate on that date.

与实际利率之间的差额