hasil dari 12 per 5 x 4 per 9 : 0,3 =

12/5 x 4/9 : 0,3 =
12/5 × 4/9 : 3/10 =
12/5 × 4/9 × 10/3 =
4 × 4/9 × 2 =
32/9 =
3 5/9.

12/5x4/9
_______=8/9
3/10
cranya tinggal dicoret-coret (10coret5=2)(3coret9=3)(2coret4=2) 
jadi,tinggal 12.2.3=72/    (8/9)
smg membantu