How many gold coins does the peak warship quartermaster center need?

The quartermaster of the peak battleship Normandy needs to prepare 2000 gold coins. According to relevant data, drawing a munitions warship requires 2000 gold coins, but six things will be given randomly, and each of these six things has a probability of 1%. The first time, there were 15 rounds of bullets, and after that, it was basically about 20 rounds.