物料供需汇总表的需求数量怎么对应？

需求量=1/(1-损耗率)

物料供需汇总表的需求数量, 如图所示：需求量为 ，怎么会有差异值？

[tr] [td=66]需求： [td=92] [td=164] [td=90] [td=139] [td=72] [td=97]
[tr] [td]ANB301 [td]20880 [td]2016/2/28 [td] [td] [td] [td]
[tr] [td]材料： [td] [td] [td] [td] [td] [td]
[tr] [td]物料代码 [td]分子 [td]分母 [td]变动损耗率 [td]固定提前期（天） [td]批量 [td]数量
[tr] [td]B1200008 [td]1 [td]1 [td]1.5 [td]42 [td]0 [td]21197.9695
[tr] [td] [td] [td] [td] [td] [td] [td]
[tr] [td=2,1]系统计算结果： [td] [td] [td] [td] [td]21218.2741
[tr] [td] [td] [td] [td] [td] [td] [td]
[tr] [td] [td=3,1](需求数量*分子/分母)/(1-变动损耗率) [td] [td] [td]

版本：5.0
补丁：2015-12-25
联系人：方主仕 QQ:285544628 联系电话：13929608342

[tr] [td=86] [td=74] [td=118]