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.
[9.766, 26.646, 3.352, -20, 65, -4.406, 6.783, 0, 8.343, 18, -7.212]