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: [-15, -45, -23.7, -29.407, -21.693, 91, 40.523, -100, 77]

[-15, -45, 91, -100, 77]