First, make 5 1/3 into an improper fraction. To do that, multiply 5 and 3, then add 1.
5 x 3 = 15
15 + 1 = 16
5 1/3 = 16/3
Now you are dividing 16/3 by 2/3.
When dividing fractions, you use the reciprocal of the 2nd fraction, 2/3, and make the divided sign a multiplication sign.
The reciprocal of a fraction is when you flip the numerator and the denominator of that fraction.
The reciprocal of 2/3 is 3/2.
Your new equation is:
16 3
---- x -----
3 2
16 x 3 = 48
3 x 2 = 6
48/6 = 8
5 1/3 divided by 2/3 = 8