how to calculate discount periop for 45 days from april 12 to may 2

Question

Date  of note,  Length of note, Date note discounted,   Discount Period

April 12              45 days                  May 2

 

March 7               120 days               June 8

Answer 1

dont understand the quesshun

from 12 Apr tu 2 Mae=20 daes

weer did yu get the 45 daes ????