Evaluate. Hint: Use the image to help break $9 \times 4$ up into two expressions. https://cdn.kastatic.org/ka-perseus-graphie/38cb4018e863004a75a6e1d3f2a0ec83dc8c96ed.svg \begin{array}{|c|c|c|} \hline 9 \times 4 & = 5\text{ fours } + \text{[blank]} \text{ fours} & \\ \hline \end{array}