Vat calculation rounding

Hi,

I am having some problems with the calculations of the vat.
Woocommerce is not rounding the vat per orderline.
I have products in the store without vat and have the rounding option unchecked.

Example.
28,92 * 0,21 = 6,0732
15,20 * 0,21 = 3,1920

6,0732 + 3,1920=9,2652 —> 9,27 (woocommerce)
6,07 + 3,19 = 9,26 —> 9,26 (how I need it)

https://wordpress.org/plugins/woocommerce/