make 9 to a fraction to get your answer, 9=9/1(any number with the denominator 1 is a whole number) 9/1×2/3 =18/3 =6 answer=6 hope this helps....

Solution 9/1 x 2/3 1) Simplify 9 x 2 and 1 x 3 18/3 2) Simplify 6