Let's break down the expression step by step:

The expression is:
$7 - 0 \times 2 + 8 \div 4$

1. Multiplication and Division come before Addition and Subtraction (according to the order of operations, often remembered by PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).
2. Multiplication: $0 \times 2 = 0$
3. Division: $8 \div 4 = 2$

Now, substitute those back into the expression: $7 - 0 + 2$

4. Subtraction and Addition:
   $7 - 0 = 7$
   $7 + 2 = 9$

So, the result is:
$9$

Would you like more details or have any questions about the steps? Here are some related questions:

1. What happens if you change the order of operations in this expression?
2. How does division work with fractions in similar expressions?
3. What is the result if you substitute $8 \div 4$ with a different number?
4. How does parentheses affect the outcome of this expression?
5. What other operations can be involved in similar mathematical expressions?

Tip: Always remember to handle multiplication and division before addition and subtraction!