605 is an integer, not a fraction.
0.605 = 605/1000 or 121/200 in fraction
There are many ways to write 330 as a fraction, 330/1 being the most common way. However, 330 x/x, where x can be any number but 0, is also allowed.
It is an integer so not really a fraction but you could express it as 605/1.
3.3 = 33⁄10 or 3 3⁄10 or 330%
0.605 as a fraction is 605/1000.
0.9/33 = 9/330 which you can simplify if required.
3.3 = 330% 330% = 33/10
330 = CCCXXX
104/330 = 52/165
0.124242424... is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 123/990. You can simplify this rational fraction if required.
55,110, 165, 220, 275, 330, 385, 440, 495, 550, 605.