To convert $\frac{449}{90}$ into a decimal number, simply divide 449 by 90:

$\frac{449}{90} \approx 4.9889$

So, $\frac{449}{90}$ is approximately equal to 4.9889.

Would you like more details or have any questions about this?

Here are 5 related questions you might find useful:

1. How do you convert a fraction to a decimal?
2. What is the remainder when 449 is divided by 90?
3. How do you express 4.9889 as a mixed number?
4. How can you simplify fractions like $\frac{449}{90}$?
5. What are the steps to convert decimals back into fractions?

Tip: When converting fractions to decimals, long division is a reliable method if the fraction doesn't simplify easily.