To evaluate this expression, you must simplify it as according to the order of operations or PEMDAS as most people remember it (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction). The first thing you need to do according to the order of operations is to multiply 4.5*3.6 since there are no parentheses or exponents. This would simplify to 16.2. Then, you do 16.2 divided by 0.6 which gets you to 27. Finally, you do 27-1.1 which gets you to your answer, 25.9.
One thing to keep in mind is in order of operations, multiplication and division are on the same level, meaning you would perform them from left to right regardless if multiplication is before division or not. The same thing applies to addition and subtraction.
