1. The problem is to understand and apply the GEMDAS rule in mathematics. 2. GEMDAS stands for Grouping symbols, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). 3. This rule tells us the order in which to perform operations in a mathematical expression to get the correct answer. 4. For example, in the expression $3 + 6 \times (5 + 4) \div 3^2$, we first solve the grouping symbols $(5 + 4) = 9$. 5. Then we calculate the exponent $3^2 = 9$. 6. Next, we perform multiplication and division from left to right: $6 \times 9 = 54$, then $54 \div 9 = 6$. 7. Finally, we perform addition: $3 + 6 = 9$. 8. So, the expression evaluates to $9$ following GEMDAS. This rule ensures consistent and correct evaluation of expressions.