Most of the other 22% is weapons.
Russia is industrially challenged and that is Putin’s most pressing problem.
The Koreans will even offer a discount for quantity purchases, too, if that's what it takes to win the deal away from the Japanese. And don't rule out India helping them to solve that challenge, either, they'd even barter for military equipment instead of energy.
The problems of having energy and not much else aren't tough to overcome unless you're a Saudi Prince or Muzzie who figures the people don't matter any more than sheep.