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- $ \\\frac{1}{3}\\\ln 2 + \\\frac{1}{3}$
- $ \\\ln 80 + 1$
- $ \\\frac{1}{3}\\\ln \\\frac{8}{5} + 1$
- $ \\\frac{1}{3}\\\ln \\\frac{4}{5} + \\\ln 2 + 1$