Write a program that store 30 and 20 in the eax and ebx respectively. then find out the addition, multiplication, and the division result of it.
The output should be as below
a. the addition result is 50
b. the multiplication result is 600
c. the division result is 1
Revise the program by incorporating variables and registers to enhance simplicity and efficiency. Conduct thorough testing to ensure that the revised version produces identical output to the original. Lastly, perform a comparative analysis between the two versions to identify any differences or improvements.