Adding decimals after zero in the invoice

Kovah, thank you for the patch for Item Quantity decimals. Any progress on the original request to add more decimals to item price?

Here is another scenario… I want to sell 10.000 small stickers for the total price of 40euros, which means each sticker will cost 0.004 euros. If I fill the information in the invoice like: qty 10.000, price 0.004 then the tolal price goes to… zero.