The result of $4 \times 5$ is:

$4 \times 5 = 20$

Would you like further details or have any other questions?

Here are some related questions to explore:

1. What is the result of $6 \times 5$?
2. How does multiplication differ from addition and subtraction?
3. How do you multiply fractions?
4. What is the distributive property in multiplication?
5. How do you multiply large numbers?

Tip: To multiply larger numbers, break them into smaller parts using the distributive property (e.g., $23 \times 5 = (20 \times 5) + (3 \times 5)$).