As we all know, petroleum refining can produce gasoline, diesel oil, kerosene, asphalt and so on. On average, about 60% of gasoline can be extracted, and the rest is 15% of diesel, 15% of kerosene and 10% of asphalt (because the specific data can't be found online according to different oil-producing areas, I estimated it).

In other words, a barrel of oil can get:

About 90 liters of finished gasoline.

About 25 liters of finished diesel oil.

About 25 liters of finished kerosene.

I wonder if this answer is satisfactory.