If you sign in with a day 4 experience, 300000/4 = 75000 days, if start check-in at the age of 1, 100 = 100 days, you want to live almost 200 years to keep every sign in (who knows there is no sign in this thing after 200), water 4 experience again if you every day, half the time, but considering the reality, you can't live again in 100, in 50 years, you have to water every day 16 experience, may be you are a diligent person, every day water 32 experience, that needs to be 25 years!!!!!!!!!!! Again if you are a big monster, daily water 64 experience, then as long as 12.5 years!!!!!!!!!!! If you are an impatient person, water 128 experience every day, you as long as 6.25 years!!!!!!!!!!!! If you are hungry, water 256 experience, every day that you fort, as long as 3.125 years!!!!!!!!!!! Of course, you will feel or too far away for 3 years, every day you are idle egg hurts, busy water 512 experience, bunkers, you only need to 1.5625 years, only a little more than a year and a half!!