In a page of a mathematics textbook shown partially below, the result of the 1st operation is 12 more than the result of the 2nd operation.
$a = 2 \quad b = $
For the real numbers $a$ and $b$ given above, find the result of the following operations.
1. operation: $a\sqrt{b} + \sqrt{b} = $
2. operation: $a\sqrt{b} - \sqrt{b} = $
3. operation: $a\sqrt{b} \times \sqrt{b} = $
4. operation: $a\sqrt{b} \div \sqrt{b} = $
Accordingly, the result of the 3rd operation is equal to how many times the result of the 4th operation?
A) 9
B) 16
C) 24
D) 30
E) 36