okay lets begin with the start of this problem, there's 12 hours in one day and they sleep 1-2 hours so lets do 2 hours which is 14 hours there for about 1 day and theres 365 days in one year so 365 times 14 is 5,110 hours in one year, so 27 years is 9,855 days so we need to use 9,855 times 5,110 is 50,359,050 hours he sleeps in his lifetime.