63000-(36000-12000) ÷4

To solve this expression, we need to follow the order of operations (also known as PEMDAS): Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Let's break it down step by step:

Step 1: Simplify the expression inside the parentheses: 36000 - 12000 = 24000

Step 2: Divide the result by 4: 24000 ÷ 4 = 6000

Step 3: Subtract the result from 63000: 63000 - 6000 = 57000

Therefore, the answer is 57000.