That is incorrect. According to the order of operations (often remembered by the acronym PEMDAS/BODMAS), you should first perform the subtraction before the division.
In the expression (30 - 3) / 9, you first subtract:
30 - 3 = 27
Then, you divide by 9:
27 / 9 = 3
So the correct result of (30 - 3) / 9 is 3.