10(5.555)^12=????

assuming you mean 10*5.555^12 then it goes like this

5.555^12 = 863393469.2787279401418596

big decimal there!

then you do 

863393469.2787279401418596*10 = 8633934692.787279401418596

or you can do this=

10*5.555 = 55.55

then

55.55^12 = 863393469278727940141.8595872158940237