Evaluate the expression.

(9 ) (4 ) (4)
5 2 1

To evaluate the expression (9 / 5) * (4 / 2) * (4 / 1), you need to follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

Let's calculate each part step-by-step:

1. Inside the first parentheses, we have 9 divided by 5, which equals 1.8.

(9 / 5) equals 1.8.

2. Inside the second parentheses, we have 4 divided by 2, which equals 2.

(4 / 2) equals 2.

3. Inside the third parentheses, we have 4 divided by 1, which equals 4.

(4 / 1) equals 4.

Now, let's multiply these three values together:

1.8 * 2 * 4 equals 14.4.

So, the final value of the expression is 14.4.