How system calculate the Line Total?

Dear All,

I did facing one problem for line total calculation in SAP B1 standard document, version 9.0 PL14.

Example Purchase Order:

Quantity = 10

Unit Price = 19.90

Discount = 45 %

Line Total by system calculated = 109.50

But, it is suppose 109.45

There is no rounding setting applied, and suppose not need any rounding.

I'm not sure how come system can get 109.50, and did i miss any setting?

Thanks in advance for any reply or any idea where to check.

regards,

muhamad