Half of much as ProcGen's maximum reward is 240/2=<<240/2=120>>120 reward

90% of CoinRun's maximum reward is 120*.9=<<120*.9=108>>108 reward

# Answer

108
<|im_start|>system
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<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
108
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?
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