It is so very simple and quick to get the answer, especially since, if you need it, you can use the calculator that comes with your computer. But since you are obviously not able to do so, the answer is 20.57 (approx).
20.5714
432
18
6
11
432 / 8 = 54
All the multiples of 432 can be divided evenly by 432: 432, 864, 1296, 1728, 2160 +432 . . .
432
216
5.4
432
36