Greg's PPO algorithm obtained 90% of the possible reward on the CoinRun environment. CoinRun's maximum reward is half as much as the maximum ProcGen reward of 240. How much reward did Greg's PPO algorithm get?
Step-by-step reasoning process below:
108
Half of much as ProcGen's maximum reward is 240 / 2 = 120 reward.

90% of CoinRun's maximum reward is 120 *.

9 = 108 reward.

.

Therefore, the answer is 108