For how many different digits n is the three-digit number 14n divisible by n? Note: 14n refers to a three-digit number with the unit digit of n, not the product of 14 and n.

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?