[(4*3.14^2)/((6.673*10^-11)(1.8986*10^27+((1.989*10^30)/2))]*(3.73*10^11)^3 (why won't the calculator compute this?)
[(4*3.14^2)/((6.673*10^-11)(1.8986*10^27+((1.989*10^30)/2))]*(3.73*10^11)^3
Parentheses didn't look right in the original.Try changing it to this...
[(4*3.14^2)/((6.673*10^-11)(1.8986*10^27+(1.989*10^30)/2)))]*(3.73*10^11)^3
Got 3.078x1016
