Definition: In this task you will be given a list of numbers. You should remove any number that is not an integer (whole number). If every number is not an whole number then an empty list ("[]") should be returned. Otherwise, answer with the list of whole numbers separated by comma inside brackets.
Input: [18.325, -18, -63, -26, -23, 25.232, -27.277, 91.1, 12.554]

[-18, -63, -26, -23]