Answer:

Explanation:
PEMDAS is a acronym which helps you to remember the order of operations.
PEMDAS stands for :
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Let's solve

Multiply the numbers : 15 × 18 = 270
⇒

Add the numbers : 270 + 12 + 3 + 9
⇒

Hope I helped!
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