1. The problem is to evaluate the expression $33 \times 3 - 18 \div 2$. 2. According to the order of operations (PEMDAS/BODMAS), multiplication and division are performed before addition and subtraction, and from left to right. 3. First, calculate the multiplication: $$33 \times 3 = 99$$ 4. Next, calculate the division: $$18 \div 2 = 9$$ 5. Now substitute these values back into the expression: $$99 - 9$$ 6. Finally, perform the subtraction: $$99 - 9 = 90$$ 7. Therefore, the value of the expression is $90$.