We have to follow pemdas. The fact that multiplication and division are in the same level we need to solve them from left to right. So we get that
[tex]\begin{gathered} 3.2+1.7\cdot1.7\cdot1.7\frac{\cdot}{\cdot}1.8\cdot6=3.2+\frac{4.913}{1.8}\cdot6 \\ 3.2+2.7294\cdot6=3.2+16.377=19.577 \end{gathered}[/tex]so the answer is 19.577
