by the way, here is the method i used:

first, convert the decimal part to a fraction in the form of n/100000
next, find the highest common factor of n and 100000
(using the 'division method' like this: http://easycalculation.com/what-is-hcf.php )

then just divide n and 100000 by that factor.

actually, that means it's accurate to 6 decimal places, i guess. well...whatever :D