I believe this question could be answered with simple divison.
There is 2 pieces of Licorice
These 2 pieces shall be divided for 3 people.
So, the amount licorice that each person get would be:
2/3 = 0.67 Licorice per person
The amount of licorice that each person will get is equal to the total number of licorice and the number of people. that is calculated through the equation,
n = number of licorice / number of persons
Substituting the known values,
n = 2/3
Answer: 2/3