$$3^{336}\times 9^{336}\times 27^{336}=$$． 
Overseas Competition->Knowledge Point->Calculation Modules->Power->Computing Powers
$$3^{336}\times 9^{336}\times 27^{336}=3^{336}\times 3^{672}\times 3^{1008}=3^{336+672+1008}=3^{2016}$$. 