What will come in the place of '?’ in the following equation, if ‘×’ and ‘÷’ are interchanged?
45 × 9 + 23 – 16 ÷ 7 = ?

Given: 45 × 9 + 23 – 16 ÷ 7 = ?

​$$\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline\end{array}$$​​
Now, ‘×’ and ‘÷’ are interchanged
After interchanging, we get:
? = 45 ÷ 9 + 23 – 16 × 7 
? = 5+23-112
? = (-84)