3. 8 1/3 x 3/5=

25/3 x 3/5=75/15=2

4. 2 5/8 x 1 2/3
21/8 x 5/3=105/24
105/24=4 9/24

Can you please check the above answers.

76/15 does not equal 2

4 is correct, but can be simplified.