Answer: (If you are multiplying 1 2/3 by 1/3 this is for you.)
The simplest answer is 5/9.
Step-by-step explanation: First, turn the mixed number into an improper fraction. Ex: 1 2/3 --> 5/3 (The easiest way is to multiply your whole number by the denominator and add you answer to the numerator.
Ex: 1 x 3 (three is the denominator, one is the whole number.) Then add you answer to the numerator.
Ex: 3 is the answer for the multiplication step, 2 is the denominator. You sum is 5. Rewrite that as a fraction over the original denominator. You should get 5/3. Then last multiply your 2 fractions, 5/3 x 1/3 = 5/9.