The Road to Olympia's riddle of eating star fruit and paying for it with gold made 4 contestants give up

In the weekly competition, Road to Olympia 20th year, contestant Hai An received a 20-point question in the Finishing round with the following content: "In the story "Eating star fruit and paying back gold", the magic bird told the younger brother and his wife to sew a three-span bag to follow the bird to the island to get gold. Suppose the three-span bag is 3 spans long, 1 span wide, 3 spans deep and one span is 20cm long. Given that the density of gold is 19.3g/cm3. When the bag is full of gold, how many kilograms of gold will the bag weigh?".

After reading the question and calculating, Hai An did not give any answer and gave the right to answer to 3 other contestants, but no one rang the bell.

Try your hand at the math problem from the show Road to Olympia. If you find the answer to the problem, scroll down to the comments to record it and see how many people think the same as you.