To simplify the expression using the order of operations, we follow these steps:
1. First, we perform any calculations inside parentheses. There are no parentheses in this expression.
2. Next, we perform any exponentiation. There are no exponents in this expression.
3. Then, we perform multiplication and division from left to right. The expression 4÷2 simplifies to 2.
4. Finally, we perform addition and subtraction from left to right. The expression 63 + 2 + 44 simplifies to 109.
So, the correct simplified expression is:
63 + 4÷2 + 44 = 109
Therefore, the answer is 6.