The image shows a diagram for the number 40, which appears to be a partially completed factor tree or a diagram illustrating factors. What is the next step in completing the factor tree?

The number in the circle at the top is 40.

The number 40 is connected to three other numbers: 2, 8, and 9.
In a standard factor tree, the numbers branching from a parent number should multiply to give the parent number. Also, all numbers in a factor tree should be factors of the original number.

• Is 2 a factor of 40? Yes, $40 \div 2 = 2