1. The problem is to evaluate the expression $8 + 42 \div 2$. 2. According to the order of operations (PEMDAS/BODMAS), division comes before addition. 3. First, divide $42$ by $2$: $$42 \div 2 = 21$$ 4. Now add $8$ to $21$: $$8 + 21 = 29$$ 5. Therefore, the value of the expression is $29$. Note: The answer $29$ is not among the provided choices, so none of the given options A to I match this result. Since the user asked for the 4-letter code from the answers, but the first problem's answer is not in the choices, we only solve the first problem as per instructions.