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: [-63.406, 64.963, -8.777, 91, 8.197, -3.88, -78, 36.703, 28.426]

[91, -78]