\begin{array}{r}

7.94 \\

-4.56 \\

\hline

\end{array} \begin{array}{r}

0.506 \\

-0.1892 \\

\hline

\end{array} \begin{array}{r}

306.09 \\

-\quad 46.45 \\

\hline

\end{array} \begin{array}{r}

7.4763 \\

-6.4767 \\

\hline

\end{array}