divide 36√39 * 9√13

To divide these two expressions, we can simplify them separately and then divide the simplified forms.

1. Simplify 36√39:
√39 can be written as √3 * √13.
36 can be written as 6 * 6.
So, 36√39 = 6 * 6 * √3 * √13 = 36√3√13.

2. Simplify 9√13:
9 can be written as 3 * 3.
So, 9√13 = 3 * 3 * √13 = 9√13.

3. Divide the simplified expressions:
36√3√13 ÷ 9√13
= (36 ÷ 9) * (√3√13 ÷ √13)
= 4 * √3

Therefore, the division of 36√39 and 9√13 is equal to 4√3.