Let us consider the following picture. Each square woud represent 1/3.
Note that since each square is a 1/3. Then the colored tiles represent 2 1/3. Now, note that the lower part of the drawing is using a "ruler" whose length is exactly 2/3. By measuring continously with the 2/3, in a way, we want to know how many times we have to use the ruler to reach the initial 2 1/3. This action of "how many times " leads to a division.
That is, we have initially 2 1/3 and we want to divide it by 2/3. This would tell us how many times we would have to use this "ruler" to get the initial lenght. Hence, the division is
From the picture, we see that we have to use the 2/3 "ruler" a total 3 and a half times to get the initial length. Then we have that
which is the first option.