2/3 X 4 = 2 2/3 cups

2/3x4=2/3x4/1=8/3 reduced to 2 2/3

2/3 x 4 = 2x4 = 8/3 broken down, 3 goes into 8, two times, which would equal 2 with a remainder of 2 so it would be 2 and 2/3.

2/3 x 4 is the same as 2/3 x 4/1 and it is equal to 8/3.