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.
[-27.099, 51, -9.492, 17, -91, 21, -25, -41.943, -20.377, -66, -18.91]