$$\left({\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}\right){\mathtt{\,\times\,}}\left({\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}\right)$$
$${\mathtt{200\,000}}{\mathtt{\,\times\,}}{\mathtt{4\,300\,000}}$$
$${\mathtt{860\,000\,000\,000}}$$
$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$
or because its all multiplication;
$${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}$$
$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$
.$$\left({\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}\right){\mathtt{\,\times\,}}\left({\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}\right)$$
$${\mathtt{200\,000}}{\mathtt{\,\times\,}}{\mathtt{4\,300\,000}}$$
$${\mathtt{860\,000\,000\,000}}$$
$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$
or because its all multiplication;
$${\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{4.3}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{5}}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}$$
$${\mathtt{8.6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{11}}}$$