Weird number game

Don't tell me your age; you probably would tell a falsehood anyway...
DON'T CHEAT BY READING AHEAD FIRST!
It takes less than a minute.
Work this out as you read .
You may need a calculator or at least pen and paper
Be sure you don't read the bottom until you've worked it out!
This is not one of those waste of time things, it's fun.
1. First of all, pick the number of times a week that you would like to go out to eat. (more than once b ut less than 10)
2. Multiply this number by 2 (just to be bold)
3. Add 5
4. Multiply it by 50
5. If you have already had your birthday this year add 1758... If you haven't, add 1757.
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 go out to restaurants in a week.)
The next two numbers are- YOUR AGE ! ------ ( Oh YES, it is!)
THIS IS THE ONLY YEAR (2008) IT WILL EVER WORK, SO SPREAD IT AROUND WHILE IT LASTS