$${\mathtt{155}}{\mathtt{\,\times\,}}{\mathtt{0.75}} = {\frac{{\mathtt{465}}}{{\mathtt{4}}}} = {\mathtt{116.25}}$$
$${\frac{\left({\frac{{\mathtt{178}}}{{\mathtt{8}}}}\right)}{\left({\mathtt{1.8}}{\mathtt{\,\small\textbf+\,}}{\mathtt{0.7}}\right)}} = {\frac{{\mathtt{89}}}{{\mathtt{10}}}} = {\mathtt{8.9}}$$
$${\mathtt{4}}{\mathtt{\,\times\,}}{{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,\times\,}}{{\mathtt{y}}}^{{\mathtt{2}}}$$
$${\frac{{\mathtt{35}}}{{\mathtt{360}}}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{{\mathtt{46.15}}}^{{\mathtt{2}}} = {\mathtt{650.517\: \!264\: \!390\: \!996\: \!275\: \!9}}$$