$\sqrt[3]{3\frac{3}{8}}\cdot \sqrt[3]{0,008}+\frac{\sqrt{400000000}}{\sqrt{1000000}}=\sqrt[3]{\frac{27}{8}}\cdot 0,2+\sqrt{\frac{400000000}{1000000}}=\frac{3}{{\sout{2}}^1}\cdot {\sout{0,2}}^{0,1}+\sqrt{400}=0,3+20=20,3$