Since Billy has started training he also has been drinking more water on Saturday he drink 2 liters 755 milliliters of water on
Sunday he drank some more is Billy drink a total os 4 liters 255 millimeters of water on Saturday and Sunday how many millimeters of water did billy drink on Sunday
I think it depends on who the writer/speaker is aiming their words towards; if it is a children's audience, I'm fairly positive that they won't use adult language, and vice versa for adults.