alculate. ×2105×4.3106

$$\left({\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}\right){\mathtt{\,\times\,}}\left({\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}\right)$$

$${\mathtt{200\,000}}{\mathtt{\,\times\,}}{\mathtt{4\,300\,000}}$$  

$${\mathtt{860\,000\,000\,000}}$$

$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$

or because its all multiplication;

$${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}$$

$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$