$0.3+\left( \left( \frac{ 197 }{ 3 }-\frac{ 5 }{ 3 } \right) \times 8 \right)$
Subtract the fractions$0.3+\left( 64 \times 8 \right)$
Multiply the numbers$0.3+512$
Add the numbers$\begin{align*}&512.3 \\&\begin{array} { l }\frac{ 5123 }{ 10 },& 512 \frac{ 3 }{ 10 }\end{array}\end{align*}$