Помогите сделать по математике номер 608(2,4,6,8) номер 609 (2,4,6,8)

608
2. 6 : 1/11 = 6 * 11 = 66
4. 5 : 5/7 = 5 * 7/5 = 7
6. 1 7/9 : 8 = 16/7 * 1/8 = 2/7
8 5 1/4 : 7 = 21/4 * 1/7 = 3/4 =0,75
609
2. 1 7/8 : 4 1/6 = 15/8 * 6/25 = 9/20
4 6 2/3 : 2 7/9 = 20/3 * 9/25 = 12/5 = 2,4
6 5 1/3 : 3 5/9 = 16/3 * 9/32 = 3/2 = 1,5
8. 6 2/5 : 1 7/9 = 32/5 * 9/16 = 18/5 = 3,6