53(1-e^-.16*4)

$${\mathtt{53}}{\mathtt{\,\times\,}}\left({\mathtt{1}}{\mathtt{\,-\,}}{{\mathtt{e}}}^{{\mathtt{\,-\,}}\left({\mathtt{0.16}}{\mathtt{\,\times\,}}{\mathtt{4}}\right)}\right) = {\mathtt{25.053\: \!501\: \!525\: \!718\: \!429\: \!5}}$$

$${\mathtt{53}}{\mathtt{\,\times\,}}\left({\mathtt{1}}{\mathtt{\,-\,}}{{\mathtt{e}}}^{\left(-{\mathtt{0.16}}\right)}{\mathtt{\,\times\,}}{\mathtt{4}}\right) = -{\mathtt{127.654\: \!483\: \!260\: \!836\: \!795\: \!6}}$$

Which do you want?  You actually asked for the second one.