Ok so first you have to make 6 2/3 an improper fraction. So multiply 6 by 3 and add it to 2. That gives you 18 +2 which is 20. Now you have 20/3 divided by 8. Dividing is the same as multiplying by the reciprocal so 20/3 /8 is the same as 20/3 * 1/8. Now do cross simplification and you get 5/3 *1/2 which gets you 5/6