negative eighteen times four thirds
Sorry Dragon that is not right.
$${\mathtt{\,-\,}}{\frac{{\mathtt{18}}{\mathtt{\,\times\,}}{\mathtt{4}}}{{\mathtt{3}}}} = -{\mathtt{24}}$$
$${\mathtt{\,-\,}}{\frac{{\mathtt{18}}{\mathtt{\,\times\,}}{\mathtt{3}}}{{\mathtt{4}}}} = {\mathtt{\,-\,}}{\frac{{\mathtt{27}}}{{\mathtt{2}}}} = -{\mathtt{13.5}}$$
$$-\frac{27}{2}=13\frac{1}{2}$$