Explain how you would model 5 x 2/3

I'm curious why you use the word "model."  As stated, your math problem invovles the multiplication of a fraction (2/3) by an integer (5).  Write this problem as

5*2

 3

and multiply out 5*2.  Divide your result by 3 (that is, write 3 in the denominator, but do not perform the actual division).  That's your answer.