-6 1/2 / -2/3

Enter this into the website calculator with the correct parentheses. http://web2.0calc.com/

Assuming you meant negative six and one-half divided by negative two-thirds:  (-6 + 1/2) / (-2/3)

$${\frac{\left({\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right)}{{\mathtt{\,-\,}}\left({\frac{{\mathtt{2}}}{{\mathtt{3}}}}\right)}} = {\frac{{\mathtt{33}}}{{\mathtt{4}}}} = {\mathtt{8.25}}$$