1. Let's clarify the problem: You are asking why you need to divide by 4 and 2 separately when you already divided by 8. 2. The key is understanding that dividing by 8 is the same as dividing by 4 and then by 2, because $8 = 4 \times 2$. 3. When you divide a number by 8, you can think of it as dividing by 4 first, then dividing the result by 2. 4. For example, if you have a number $x$, dividing by 8 is: $$\frac{x}{8} = \frac{x}{4 \times 2} = \frac{\frac{x}{4}}{2}$$ 5. So, dividing by 4 and then by 2 is just breaking down the division by 8 into two steps. 6. This can be useful for simplifying calculations or understanding the process better. Final answer: Dividing by 4 and then by 2 is equivalent to dividing by 8, so both methods give the same result.