Release petrol Audi 80 B4

Hi guys, I decided to sell the Audi because the upcoming repairs, e.g. new exhaust would not have been so worthwhile any more. Since we give the Audi off on Tuesday, but the tank is still quite full (just 300km driven) , I wanted to ask how to empty the tank still quickly, because petrol is so expensive that I don’t have to give it away. achja senseless driving through the world history is not a sensible option for me. is the easiest possibility a Is the slope enough at all because the tank will also be relatively deep. Lg Mipla