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: [-73, -3.587, -2.258, -8.537, -20.996, 53, -8, -87, 5.337]

[-73, 53, -8, -87]