6) 1 5/6 . 3 3/5 : 2 1/5 5) 8 1/3 . 1 5/7 : 2 1/5

6)  1 5/6 * 3 3/5 : 2 1/5 = 3
1 5/6 * 3 3/5 = 33/5 = 6,6
6 6/10 : 2 1/5 = 66/10 : 11/5 = 66/10 * 5/11 = 6/2 = 3

5) 8 1/3 * 15/7 : 2 1/5 = 8 9/77
8 1/3 * 15/7 = 125/7 = 17 6/7
125/7 : 2 1/5 = 125/7 : 11/5 = 125/7 * 5/11 = 625/77 = 8 9/77