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.

[6.359, -42, -4.277, -15, -45]
[-42, -15, -45]

[33, -35, -57.634, 9.005, 89.871, 1.696, 20]
[33, -35, 20]

[-87.431, 72, 72, -2.816]

[72, 72]