Thank you so very much!!! However, I do not understand how -287^2/7 + 82*287 - 310 = 15057. I have tried to do it over, over and when I do -287^2 I get 82369 and when I divide this by 7 I get 11767, then 82*287 is 23534 + 11767 - 310 is 34991..... Can you please tell me where I am going wrong with this?