1. First of all, pick the number of times a week that you would like to have chocolate (more than once but less than 10).
2. Multiply this number by 2.
3. Add 5.
4. Multiply it by 50.
5. If you have already had your birthday this year, add 1759. If you haven't, add 1758.
6. Now subtract the four-digit year that you were born.
You should have a three-digit number. The first digit of this was your original number
(i.e., how many times you want to have chocolate each week). The next two numbers are yuur age!
My result was 245, absolutely correct. Weird, eh?