he can pour 10 2/3 cups from 6 2/3 quarts of juice.
6 2/3 divded by 2/3: mixed fraction of 6 2/3 is 20/3 . now 20/3 divided by 2/3
20/3 times 3/2 = 10/1=10
cause the 3's cancel each other into 1 and 20 is dived by is 10. 10/1 times 1/1= 10/1=10
check: 10/1 cups times 2/3 cups = 20/3=6 2/3