(365*18)+4=6574.I have a potion that will turn you into 6569 days old, that one day makes a lot of difference and then I'd be cooking ️ you gonna cry from me forcing you to hit me with a shovel
The 4 added is for leap year. Since leap year is once every 4 years, there would be a leap year on the fourth, eighth, twelfth, and sixteenth years.
Anyone aged 6769 days would be 18 years and five days.
Thanks for coming to my TED talk.