Its the definition of "you dont own the game". You pay to get access to the service of playing the game and it wants to keep you playing as long as possible so you spend more money on micro transactions. They are constantly updated, usually as some form of "season", have daily login streak bonuses, etc. And after 2 years the game shuts down and you have nothing and can't play anything you paid for anymore.
Every live service game that fails or gets cancled is a good thing.
It kinda does its just not what you expected (and not what the question meant). In a 500kg mixture of you (100kg) and wine (400kg), exactly 80% of that mixture is wine and 20% is you.
To answer the actually question you'd need to know how much extract you need to turn 1L of blood into 1L of wine and I'm to lazy for that math.