Ryan had 1/2 pound of chocolate. he divides, it into 4 equal portions. Enter the amount of chocolate, in pounds

Each portion of the chocolate was 1/8 pounds

To divide 1/2 by 4, you can treat it as (1/2) / (4/1), and to divide fractions you flip the second fraction and multiply, so:

(1/2) * (1/4) = 1/8

So each portion of chocolate was 1/8 pounds.