Question 1183522
.


It looks like you have a great entertainment, isn't it ?



-----------------



An alternative way is to edit this calculation line to the simpler format,  like this



                (-2/3*0.02)^4*(-3/4*0.03)^3*(-4/5*0.04)^2*(-5/6*0.05)*10^20



then go to any of numerous free of charge online calculators  (for instance,  to  online calculator  www.desmos.com),

copy/paste this line there and get the answer in one click.



Or,  with the same success,  you can use an  Excel spreadsheet in your computer,  if you have this software there.



So,  the optimal way depends on several factors:   on your goals  (on what you want to learn/(to get) 

from this exercise),   and on the amount of time you have/(you want) to spend for this exercise.



From my school years,  I remember calculations with four-store fractions.


We did it enthusiastically by hands, never used computers or calculators and never asked other people for help from outside . . . 



If such simple task is given to  YOU,  it means that  YOU  and  NOBODY  ELSE  should do it 

from the beginning to the end,  without re-loading it to the shoulders of other people.



The meaning of teaching and the meaning of learning lie in this simple truth.