1. **State the problem:** Evaluate the expression $n + 15 \div 3$ when $n = 2$. 2. **Recall the order of operations (PEMDAS):** Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). 3. **Substitute $n = 2$ into the expression:** $$2 + 15 \div 3$$ 4. **Perform the division first:** $$15 \div 3 = 5$$ 5. **Rewrite the expression with the division evaluated:** $$2 + 5$$ 6. **Add the numbers:** $$2 + 5 = 7$$ **Final answer:** $7$