1.) 15 * 4 2/3

2.) 10 2/3 divided by 4

1. 15 * 4 2/3 =

15 * 14/3 =
5 * 14 = 70.

2. (10 2/3) / 4 =
(32/3) / 4 =
32/3 * 1/4 = 32/12 = 8/3.