$${\mathtt{2\,200}}{\mathtt{\,\small\textbf+\,}}{\mathtt{110}}{\mathtt{\,\times\,}}{{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {\mathtt{11\,335.909\: \!884\: \!971\: \!443\: \!778\: \!7}}$$
$${{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {{\mathtt{1\,581}}}^{\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)} = {\left({{\mathtt{1\,581}}}^{{\mathtt{3}}}\right)}^{\left({\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right)}$$ = $${\sqrt[{{\mathtt{5}}}]{{{\mathtt{1\,581}}}^{{\mathtt{3}}}}} = {\mathtt{83.053\: \!726\: \!227\: \!013\: \!125\: \!3}}$$
$${{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {\mathtt{83.053\: \!726\: \!227\: \!013\: \!125\: \!3}}$$
$${\mathtt{2\,200}}{\mathtt{\,\small\textbf+\,}}{\left({\mathtt{110}}{\mathtt{\,\times\,}}{\mathtt{1\,581}}\right)}^{{\mathtt{0.6}}} = {\mathtt{3\,593.781\: \!619\: \!797\: \!252\: \!656}}$$
$${\mathtt{2\,200}}{\mathtt{\,\small\textbf+\,}}{\mathtt{110}}{\mathtt{\,\times\,}}{{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {\mathtt{11\,335.909\: \!884\: \!971\: \!443\: \!778\: \!7}}$$
$${{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {{\mathtt{1\,581}}}^{\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)} = {\left({{\mathtt{1\,581}}}^{{\mathtt{3}}}\right)}^{\left({\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right)}$$ = $${\sqrt[{{\mathtt{5}}}]{{{\mathtt{1\,581}}}^{{\mathtt{3}}}}} = {\mathtt{83.053\: \!726\: \!227\: \!013\: \!125\: \!3}}$$
$${{\mathtt{1\,581}}}^{{\mathtt{0.6}}} = {\mathtt{83.053\: \!726\: \!227\: \!013\: \!125\: \!3}}$$
$${\mathtt{2\,200}}{\mathtt{\,\small\textbf+\,}}{\left({\mathtt{110}}{\mathtt{\,\times\,}}{\mathtt{1\,581}}\right)}^{{\mathtt{0.6}}} = {\mathtt{3\,593.781\: \!619\: \!797\: \!252\: \!656}}$$