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: [63, 56, 13.812, -99, 87.81, -94, -20.711, 0.102, 28.918, 28, -9]

[63, 56, -99, -94, 28, -9]