..........think of a number between 1 and 10 (not incl. 1 and 10) multiply it by 2, add 5, then multiply it by 50... if your birthday has already passed this year add 1758
if you've not had your birthday yet this year add 1757...
subtract the full year you was born from the total, post your answer, as well as your age, i can also tell you the original number between 1 and 10 that you started with.
( i might suggest a calculator for those not too hot at maths)