Binary decimals

0.333

	0.333
*		2
	0.666 <------ 0 (1st)
*		2
	1.332 <------ 1 (2nd)
*		2 [over here it's .332 * 2, only the decimal place matters]
	0.664 <------ 0 (3rd)
*		2
	1.328 <------ 1 (4th)
*		2
    0.656 <------ 0 (5th)
*		2
	1.312 <------ 1 (6th)


	and so forth...

Then for the final binary combination, you just go from the first one down (unlike whole numbers for division)

So then the answer is 0.010101...