Abel throws a dart that hits the square shown below: What is the probability that the dart does not hit a point in the circle?

14/6 is inadequate without units of measurement.  I must assume you meant 14/6 cups of yoghurt.

If each parfait requires 2/6 cup of yoghurt, how many such parfait can Lucy make?  To answer this, divide 14/6 cups by 2/6 cups per parfait:

14

  6
                 14         6
 =   * = 7 parfaits.
                   6         2
  2
 
   6