How to set precision of currency/float in lookup

Hi, I am looking for “How to set precision of currency/float in lookup”. I have a row with lookup from id → currency/float. It is automatically round value - 0,15 → 0,2 or 0,01 → 0. I need the original value to be displayed not the rounded. Is there any options to set precision or style to have at least 3 decimal numbers? Thanks

Where exactly do you see the rounded value? Can you provide a screenshot?