Hi there!
Well to solve this problem we obviously need to multiply 3/8 by 4/9,
3/8*4/9=12/72
3 groups of 4/9 bascially means 3*4/9
3*4/9=12/9
Divide by 8,
12/9/8=12/9*1/8=12/72
Thus, As I divided into 3 groups of 4/9 which is 3/9*4/8
Hoped I helped. :)
