<human>:  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?
<bot>: What is CoinRun's maximum reward? ** Half of much as ProcGen's maximum reward is 240/2=<<240/2=120>>120 reward
How much reward did Greg's PPO algorithm get? ** 90% of CoinRun's maximum reward is 120*.9=<<120*.9=108>>108 reward
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