If 1 / 6 of the number is equal to 3 / 5 of the false number, what is 3 / 9 of the false number equal to?

If 1 / 6 of the number is equal to 3 / 5 of the false number, what is 3 / 9 of the false number equal to?

If B * 1 / 6 = a * 3 / 5, then B: a = 18:5
(5\3)/18=5/54