try this

1.take date on which u r born (only date) 2.multiply it by4 3.add 13 to result of step2 4.multiply it by 25( result of step3) 5.subtract 200 from result of step4 6.add the month in which u r born to result of step5 ( like 1 for jan,2 for feb etc) 7,multiply it(result of 6) by 2 8. -40 9. *50 10. add last two digits of year u r born 11. *10500 plz tell wat u got notice anything?